TUDOR INVESTMENT CORP ET AL
SC 13D, 1997-07-02
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<PAGE>
 
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549
                             ______________________

                                  SCHEDULE 13D
                   Under the Securities Exchange Act of 1934

                               (Amendment No.  )


                               INTERCARDIA, INC.
                            -----------------------------
                                (Name of Issuer)


                    Common Stock, par value $.001 per share
                    ---------------------------------------
                         (Title of Class of Securities)
                         ------------------------------


                                   45844M106
                             --------------------
                                 (CUSIP Number)


                              Andrew S. Paul, Esq.
                        c/o Tudor Investment Corporation
                         One Liberty Plaza (51st Floor)
                           New York, New York  10006
                                 (212) 602-6700
                   ----------------------------------------
                 (Name, Address and Telephone Number of Person
               Authorized to Receive Notices and Communications)


                                  June 23, 1997
             ----------------------------------------------------
            (Date of Event which Requires Filing of this Statement)


If the filing person has previously filed a statement on Schedule 13G to report
the acquisition which is the subject of this Schedule 13D, and is filing this
schedule because of Rule 13d-1(b)(3) or (4), check the following box [ ].

                                     Page 1
<PAGE>
 
- --------------------
CUSIP NO. 45844M106
- --------------------
- -----------------------------------------------------------------
 1   NAME OF REPORTING PERSON
     S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
     Tudor Investment Corporation
     TIN: 22-2514825
- -----------------------------------------------------------------
 2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
                                              (a)  [  ]
                                              (b)  [X ]
- -----------------------------------------------------------------
 3.  SEC USE ONLY

- -----------------------------------------------------------------
 4.  SOURCE OF FUNDS
     OO
- -----------------------------------------------------------------
 5.  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS
     REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e)
                                                   [X ]
- -----------------------------------------------------------------
 6.  CITIZENSHIP OR PLACE OF ORGANIZATION
     Delaware
- -----------------------------------------------------------------
                       7  SOLE VOTING POWER
  NUMBER OF               0
   SHARES        -----------------------------------
BENEFICIALLY           8  SHARED VOTING POWER
  OWNED BY                336,800
   EACH          -----------------------------------
 REPORTING             9  SOLE DISPOSITIVE POWER
   PERSON                 0
   WITH          -----------------------------------
                      10  SHARED DISPOSITIVE POWER
                          336,800
- -----------------------------------------------------------------
11   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING
     PERSON
                          336,800
- -----------------------------------------------------------------
12   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
     CERTAIN SHARES
                                                   [  ]
- -----------------------------------------------------------------
13   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
                          5.0%
- -----------------------------------------------------------------
14   TYPE OF REPORTING PERSON
     CO
- -----------------------------------------------------------------

                                     Page 2
<PAGE>
 
- --------------------
CUSIP NO. 45844M106
- --------------------
- ---------------------------------------------------------------------
 1   NAME OF REPORTING PERSON
     S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
     Paul Tudor Jones, II
     TIN:
- ---------------------------------------------------------------------
 2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
                                              (a)  [  ]
                                              (b)  [X ]
- ---------------------------------------------------------------------
 3.  SEC USE ONLY

- ---------------------------------------------------------------------
 4.  SOURCE OF FUNDS
     OO
- ---------------------------------------------------------------------
 5.  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS
     REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e)
                                                   [  ]
- ---------------------------------------------------------------------
 6.  CITIZENSHIP OR PLACE OF ORGANIZATION
     United States of America
- ---------------------------------------------------------------------
                 7  SOLE VOTING POWER
  NUMBER OF         0
    SHARES       -----------------------------------
BENEFICIALLY     8  SHARED VOTING POWER
  OWNED BY          359,400
    EACH         -----------------------------------
 REPORTING       9  SOLE DISPOSITIVE POWER
   PERSON           0
    WITH         -----------------------------------
                 10 SHARED DISPOSITIVE POWER
                    359,400
- ---------------------------------------------------------------------
11   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING
     PERSON
                    359,400
- ---------------------------------------------------------------------
12   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
     CERTAIN SHARES
                                                   [  ]
- ---------------------------------------------------------------------
13   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
                    5.3%
- ---------------------------------------------------------------------       
14   TYPE OF REPORTING PERSON
     IN
- ---------------------------------------------------------------------

                                     Page 3
<PAGE>
 
- --------------------
CUSIP NO. 45844M106
- --------------------
- ---------------------------------------------------------------------
 1   NAME OF REPORTING PERSON
     S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
     The Raptor Global Fund Ltd.
     TIN:  n/a
- ---------------------------------------------------------------------
 2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
                                              (a)  [  ]
                                              (b)  [X ]
- ---------------------------------------------------------------------
 3.  SEC USE ONLY

- ---------------------------------------------------------------------
 4.  SOURCE OF FUNDS
     OO
- ---------------------------------------------------------------------
 5.  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS
     REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e)
                                                   [  ]
- ---------------------------------------------------------------------
 6.  CITIZENSHIP OR PLACE OF ORGANIZATION
     Cayman Islands
- ---------------------------------------------------------------------
                       7  SOLE VOTING POWER
  NUMBER OF               0
    SHARES             -----------------------------------
BENEFICIALLY           8  SHARED VOTING POWER
  OWNED BY                132,900
    EACH               -----------------------------------
 REPORTING             9  SOLE DISPOSITIVE POWER
   PERSON                 0
    WITH               -----------------------------------
                       10 SHARED DISPOSITIVE POWER
                          132,900
- ---------------------------------------------------------------------
11   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING
     PERSON
                          132,900
- ---------------------------------------------------------------------
12   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
     CERTAIN SHARES
                                                   [  ]
- ---------------------------------------------------------------------
13   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
                          2.0%
- ---------------------------------------------------------------------
14   TYPE OF REPORTING PERSON
     CO
- ---------------------------------------------------------------------

                                     Page 4
<PAGE>
 
- --------------------
CUSIP NO. 45844M106
- --------------------
- ---------------------------------------------------------------------
 1   NAME OF REPORTING PERSON
     S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
     The Raptor Global Fund L.P.
     TIN: 13-3735415
- ---------------------------------------------------------------------
 2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
                                              (a)  [  ]
                                              (b)  [X ]
- ---------------------------------------------------------------------
 3.  SEC USE ONLY

- ---------------------------------------------------------------------
 4.  SOURCE OF FUNDS
     OO
- ---------------------------------------------------------------------
 5.  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS
     REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e)
                                                   [  ]
- ---------------------------------------------------------------------
 6.  CITIZENSHIP OR PLACE OF ORGANIZATION
     Delaware
- ---------------------------------------------------------------------
                 7  SOLE VOTING POWER
  NUMBER OF         0
   SHARES        -----------------------------------
BENEFICIALLY     8  SHARED VOTING POWER
  OWNED BY          53,600
   EACH          -----------------------------------
 REPORTING       9  SOLE DISPOSITIVE POWER
   PERSON           0
   WITH          -----------------------------------
                 10 SHARED DISPOSITIVE POWER
                    53,600
- ---------------------------------------------------------------------
11   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING
     PERSON
                    53,600
- ---------------------------------------------------------------------
12   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
     CERTAIN SHARES
                                                   [  ]
- ---------------------------------------------------------------------
13   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
                    0.8%
- ---------------------------------------------------------------------
14   TYPE OF REPORTING PERSON
     PN
- ---------------------------------------------------------------------

                                     Page 5
<PAGE>
 
- --------------------
CUSIP NO. 45844M106
- --------------------
- ---------------------------------------------------------------------
 1   NAME OF REPORTING PERSON
     S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
     Tudor Arbitrage Partners L.P.
     TIN:  13-3496979
- ---------------------------------------------------------------------
 2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
                                              (a)  [  ]
                                              (b)  [X ]
- ---------------------------------------------------------------------
 3.  SEC USE ONLY

- ---------------------------------------------------------------------
 4.  SOURCE OF FUNDS
     OO
- ---------------------------------------------------------------------
 5.  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS
     REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e)
                                                   [  ]
- ---------------------------------------------------------------------
 6.  CITIZENSHIP OR PLACE OF ORGANIZATION
     Delaware
- ---------------------------------------------------------------------
                 7  SOLE VOTING POWER
  NUMBER OF         0
   SHARES        -----------------------------------
BENEFICIALLY     8  SHARED VOTING POWER
  OWNED BY          22,600
   EACH          -----------------------------------
 REPORTING       9  SOLE DISPOSITIVE POWER
   PERSON           0
   WITH          -----------------------------------
                 10 SHARED DISPOSITIVE POWER
                    22,600
- ---------------------------------------------------------------------
11   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING
     PERSON
                    22,600
- ---------------------------------------------------------------------
12   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
     CERTAIN SHARES
                                                   [  ]
- ---------------------------------------------------------------------
13   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
                    0.3%
- ---------------------------------------------------------------------
14   TYPE OF REPORTING PERSON
     PN
- ---------------------------------------------------------------------

                                     Page 6
<PAGE>
 
- --------------------
CUSIP NO. 45844M106
- --------------------
- ---------------------------------------------------------------------
 1   NAME OF REPORTING PERSON
     S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
     Tudor Global Trading LLC
     TIN:  13-3862744
- ---------------------------------------------------------------------
 2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
                                              (a)  [  ]
                                              (b)  [X ]
- ---------------------------------------------------------------------
 3.  SEC USE ONLY

- ---------------------------------------------------------------------
 4.  SOURCE OF FUNDS
     OO
- ---------------------------------------------------------------------
 5.  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS
     REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e)
                                                   [  ]
- ---------------------------------------------------------------------
 6.  CITIZENSHIP OR PLACE OF ORGANIZATION
     Delaware
- ---------------------------------------------------------------------
                 7  SOLE VOTING POWER
  NUMBER OF         0
   SHARES        -----------------------------------
BENEFICIALLY     8  SHARED VOTING POWER
  OWNED BY          22,600
   EACH          -----------------------------------
 REPORTING       9  SOLE DISPOSITIVE POWER
   PERSON           0
   WITH          -----------------------------------
                 10 SHARED DISPOSITIVE POWER
                    22,600
- ---------------------------------------------------------------------
11   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING
     PERSON
                    22,600
- ---------------------------------------------------------------------
12   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
     CERTAIN SHARES
                                                   [  ]
- ---------------------------------------------------------------------
13   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
                    0.3%
- ---------------------------------------------------------------------
14   TYPE OF REPORTING PERSON
     OO
- ---------------------------------------------------------------------

                                     Page 7
<PAGE>
 
- --------------------
CUSIP NO. 45844M106
- --------------------
- ---------------------------------------------------------------------
 1   NAME OF REPORTING PERSON
     S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
     Tudor BVI Futures, Ltd.
     TIN: n/a
- ---------------------------------------------------------------------
 2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
                                              (a)  [  ]
                                              (b)  [X ]
- ---------------------------------------------------------------------
 3.  SEC USE ONLY

- ---------------------------------------------------------------------
 4.  SOURCE OF FUNDS
     OO
- ---------------------------------------------------------------------
 5.  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS
     REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e)
                                                   [  ]
- ---------------------------------------------------------------------
 6.  CITIZENSHIP OR PLACE OF ORGANIZATION
     British Virgin Islands
- ---------------------------------------------------------------------
                  7  SOLE VOTING POWER
  NUMBER OF          0
    SHARES        -----------------------------------
BENEFICIALLY      8  SHARED VOTING POWER
  OWNED BY           128,400
    EACH          -----------------------------------
 REPORTING        9  SOLE DISPOSITIVE POWER
   PERSON            0
    WITH          -----------------------------------
                  10 SHARED DISPOSITIVE POWER
                     128,400
- ---------------------------------------------------------------------
11   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING
     PERSON
                     128,400
- ---------------------------------------------------------------------
12   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
     CERTAIN SHARES
                                                   [  ]
- ---------------------------------------------------------------------
13   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
                     1.9%
- ---------------------------------------------------------------------
14   TYPE OF REPORTING PERSON
     CO
- ---------------------------------------------------------------------

                                     Page 8
<PAGE>
 
- --------------------
CUSIP NO. 45844M106
- --------------------
- ---------------------------------------------------------------------
 1   NAME OF REPORTING PERSON
     S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
     The Upper Mill Capital Appreciation Fund Ltd.
     TIN:  n/a
- ---------------------------------------------------------------------
 2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
                                              (a)  [  ]
                                              (b)  [X ]
- ---------------------------------------------------------------------
 3.  SEC USE ONLY

- ---------------------------------------------------------------------
 4.  SOURCE OF FUNDS
     OO
- ---------------------------------------------------------------------
 5.  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS
     REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e)
                                                   [  ]
- ---------------------------------------------------------------------
 6.  CITIZENSHIP OR PLACE OF ORGANIZATION
     Cayman Islands
- ---------------------------------------------------------------------
                       7  SOLE VOTING POWER
  NUMBER OF               0
    SHARES             -----------------------------------
BENEFICIALLY           8  SHARED VOTING POWER
  OWNED BY                21,900
    EACH               -----------------------------------
 REPORTING             9  SOLE DISPOSITIVE POWER
   PERSON                 0
    WITH               -----------------------------------
                       10 SHARED DISPOSITIVE POWER
                          21,900
- ---------------------------------------------------------------------
11   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING
     PERSON
                          21,900
- ---------------------------------------------------------------------
12   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
     CERTAIN SHARES
                                                   [  ]
- ---------------------------------------------------------------------
13   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
                          0.3%
- ---------------------------------------------------------------------
14   TYPE OF REPORTING PERSON
     CO
- ---------------------------------------------------------------------

                                     Page 9
<PAGE>
 
- --------------------
CUSIP NO. 45844M106
- --------------------
- -----------------------------------------------------------------
1       NAME OF REPORTING PERSON
        S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
        Tudor Proprietary Trading, L.L.C.
        TIN:  13-3720063
- -----------------------------------------------------------------
2       CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
                                                (a)  [  ]
                                                (b)  [X ]
- -----------------------------------------------------------------
3.      SEC USE ONLY

- -----------------------------------------------------------------
4.      SOURCE OF FUNDS
        OO
- -----------------------------------------------------------------
5.      CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS
        REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e)
                                                    [  ]
- -----------------------------------------------------------------
6.      CITIZENSHIP OR PLACE OF ORGANIZATION
        Delaware
- ----------------------------------------------------------------- 
                7       SOLE VOTING POWER
  NUMBER OF             0
    SHARES      ------------------------------------------
BENEFICIALLY    8       SHARED VOTING POWER
  OWNED BY              0
    EACH        ------------------------------------------
 REPORTING      9       SOLE DISPOSITIVE POWER
   PERSON               0
    WITH        ------------------------------------------
                10      SHARED DISPOSITIVE POWER
                        0
- ----------------------------------------------------------------- 
11      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING
        PERSON
                        0
- -----------------------------------------------------------------
12      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
        CERTAIN SHARES
                                                        [  ]
- -----------------------------------------------------------------
13      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
                        0.0%
- -----------------------------------------------------------------
14      TYPE OF REPORTING PERSON
        OO
- -----------------------------------------------------------------

                                    Page 10
<PAGE>
 
Item 1.   Security and Issuer
          -------------------

          This Schedule 13D, dated July 2, 1997, relates to the common stock,
par value $.001 per share ("Common Stock"), of INTERCARDIA, INC., a Delaware
corporation (the "Company"), filed by Tudor Investment Corporation, a Delaware
corporation ("TIC"), Paul Tudor Jones, II, a natural person and a citizen of the
United States ("Mr. Jones"), The Raptor Global Fund Ltd., a company organized
under the laws of the Cayman Islands ("Raptor Ltd."), The Raptor Global Fund
L.P., a Delaware limited partnership ("Raptor L.P."), Tudor Arbitrage Partners
L.P., a Delaware limited partnership ("TAP"), Tudor Global Trading LLC, a
Delaware limited liability company ("TGT"), Tudor BVI Futures, Ltd., a
corporation organized under the laws of the British Virgin Islands 
("Tudor BVI"), Tudor Proprietary Trading, L.L.C. ("TPT"), and The Upper Mill
Capital Appreciation Fund Ltd., a company organized under the laws of the Cayman
Islands ("Upper Mill", and collectively with TIC, Mr. Jones, Raptor Ltd., Raptor
L.P., TAP, TGT, TPT and Tudor BVI, the "Reporting Persons").* The summaries of
information on schedules attached hereto are qualified in their entirety by
reference to such schedules, which are incorporated by reference herein.

          The Company's principal executive offices are located at P.O. Box
14287, 3200 Chapel Hill Nelson Highway, Cape Fear Building, Suite 101, Research
Triangle Park, NC 27709.


Item 2.   Identity and Background.
          ----------------------- 

          The Reporting Persons are TIC, Mr. Jones, Raptor Ltd., Raptor L.P.,
TAP, TGT, Tudor BVI and Upper Mill. The business address of each of TIC, Mr.
Jones, Raptor L.P., TAP and TGT is c/o Tudor Investment Corporation, 600
Steamboat Road, Greenwich, Connecticut 06830. The business address of each of
Raptor Ltd., Tudor BVI and Upper Mill is c/o Curacao International Trust Company
N.V., Kaya Flamboyan 9, Curacao, Netherlands Antilles. The business address of
TPT is The Upper Mill, Kingston Road, Ewell, Surrey KT17 2AF, England.

          TIC is an international money management firm that provides investment
advice to Raptor Ltd., Raptor L.P., Tudor BVI and Upper Mill, among others.

          Mr. Jones' principal employment is as Chairman and Chief Executive
Officer of TIC of which he owns a majority of the capital stock and voting
securities.


- ---------- 
*  For purposes of this Statement on Schedule 13D the Reporting Persons have
filed as a "group".  Nevertheless, the Reporting Persons hereby disclaim that
they are members of a "group" for purposes of Section 13(d) of the Securities
Exchange Act of 1934 or for any other purpose.

                                    Page 11
<PAGE>
 
          Each of Raptor Ltd., Raptor L.P., TAP, Tudor BVI, TPT and Upper Mill
is an investment fund which principally invests in debt, equity, derivative
securities and other financial instruments for the benefit of the holders of its
partnership, stock and other capital securities.

          TGT is the sole general partner of TAP.

          The name, residence or business address, present principal occupation
or employment, the name, principal business and address of any corporation or
other organization in which such employment is conducted and the citizenship of
each natural person that is a director or executive officer of TIC, TGT, Raptor
Ltd., Tudor BVI, TPT or Upper Mill is set forth on Schedule I hereto and is
incorporated by reference herein.  TIC is the sole general partner of Raptor
L.P.  TGT is the sole limited partner of TAP.

          During the last five years, none of the Reporting Persons, or to the
best knowledge and belief of the Reporting Persons, any of the individuals
listed on Schedule I hereto, has been convicted in a criminal proceeding
(excluding traffic violations or similar misdemeanors) or has been a party to a
civil proceeding of a judicial or administrative body of competent jurisdiction
as a result of which any Reporting Person or any person listed on Schedule I was
or is subject to a judgment, decree or final order enjoining future violations
of, or prohibiting activities subject to, federal or state securities laws or
finding any violation of such law, except as follows:

          On September 12, 1996, TIC settled a proceeding with the Securities
and Exchange Commission (the "SEC") relating to alleged violations of the
"uptick rule" in connection with certain sales of stock over a two day period in
March 1994.  Without admitting or denying the SEC's findings, TIC paid a civil
penalty of $800,000, and agreed not to violate the uptick rule in the future.


Item 3.   Source and Amount of Funds or Other Consideration.
          ------------------------------------------------- 

          The shares of Common Stock beneficially owned by each of Raptor Ltd.,
Raptor L.P., TAP, Tudor BVI, TPT and Upper Mill were acquired in open market
purchases for cash.  The sources of the funds used to purchase the shares of
Common Stock by each of the Reporting Persons were (i) capital contributions to
such Reporting Person,(ii) the proceeds of transactions with respect to prior
investments held by such Reporting Persons and (iii) cash borrowed pursuant to
margin loans with Morgan Stanley & Co. Incorporated, which margin loans are
secured by all of the shares of Common Stock.

                                    Page 12
<PAGE>
 
Item 4.   Purpose of Transaction.
          ---------------------- 

          Each of Raptor Ltd., Raptor L.P., TAP, Tudor BVI, TPT and Upper Mill
initially acquired the Common Stock beneficially owned by such Reporting Person
for investment purposes.  Each of such Reporting Persons intends to continue to
evaluate their respective investments in Common Stock based on the Company's
financial condition, results of operations and prospects as well as other then
existing or anticipated facts and circumstances including general economic,
market and other financial conditions.  Accordingly, each of the Reporting
Persons reserves the right to change its plans and intentions with respect to
its investment in securities of the Company at any time, as it deems
appropriate.  In particular, each of the Reporting Persons may at any time and
from time to time (i) acquire additional shares of Common Stock, (ii) dispose of
Common Stock, or (iii) enter into privately negotiated derivative transactions
with institutional counterparties to hedge the market risk of some or all of its
positions in the Common Stock.  There can be no assurance that any Reporting
Person will increase or decrease its investment in the Company or as to the
number of shares of Common Stock or derivative securities that may be bought or
sold in any such transactions.

          Except as set forth in this Schedule 13D, none of the Reporting
Persons currently has any plans or proposals which relate to or would result in
any of the transactions, actions or events enumerated in paragraphs (a) through
(j) of the instructions to Item 4 of Schedule 13D.


Item 5.   Interest in Securities of the Issuer.
          ------------------------------------ 

          Attached hereto as Schedule II is a list of the transactions by each
of the Reporting Persons in Common Stock within the past sixty days.

          Because TIC is the sole general partner of Raptor L.P. and provides
investment advisory services to Raptor Ltd., Raptor L.P., Tudor BVI and Upper
Mill, TIC may be deemed to beneficially own the shares of Common Stock owned by
each of such Reporting Persons.  TGT, as the sole general partner of TAP, may be
deemed to beneficially own the shares of Common Stock owned by TAP.  In
addition, because Mr. Jones owns a majority of the capital stock and voting
securities of TIC and indirectly owns a majority of the equity interests in 
TGT and TPT, Mr. Jones may be deemed to beneficially own the shares of Common
Stock deemed beneficially owned by TIC, TPT and TGT.

          Based on the information contained in the Company's Form 10-Q for the
quarter ended March 31, 1997 that there were 6,757,651 shares of Common Stock
issued and outstanding as of May 9, 1997, each Reporting Person beneficially
owns (or, with respect to TIC, 

                                    Page 13
<PAGE>
 
Mr. Jones and TGT, may be deemed to beneficially own) the number and percentage
of outstanding shares of Common Stock listed in the responses to Items 11 and
13, respectively, of the cover page filed herewith for such Reporting Person. In
addition, the number of shares of Common Stock beneficially owned (or, with
respect to TIC, Mr. Jones and TGT, which may be deemed beneficially owned) by
each Reporting Person with respect to which such Reporting Person (i) has sole
voting power, (ii) shares voting power, (iii) has sole dispositive power and
(iv) shares dispositive power are listed in the responses to Items 7, 8, 9 and
10, respectively, of the cover page filed herewith for such Reporting Person.
The voting and dispositive power is reported as shared because each of the
Reporting Persons (other than TIC, TAP, TGT, TPT and Mr. Jones) has the power to
remove TIC as its investment advisor or general partner. Each of the Reporting
Persons (other than TIC and Mr. Jones) expressly disclaim beneficial ownership
of the shares of Common Stock beneficially owned by any other Reporting Person
and each of TIC, Mr. Jones and TGT disclaim beneficial ownership of the Common
Stock beneficially owned by Raptor Ltd., Raptor L.P., TAP, Tudor BVI, Upper 
Mill, TPT and, in the case of TIC and Mr. Jones, TGT.


Item 6.   Contracts, Arrangements, Understandings
          or Relationships with Respect to Securities
          of the Issuer
          -------------------------------------------

          None.


Item 7.   Material to Be Filed as Exhibits
          --------------------------------

          (1)  Joint Filing Agreement

                                    Page 14
<PAGE>
 
                              SIGNATURE

          After reasonable inquiry and to the best of my knowledge and belief, I
certify that the information set forth in this Schedule 13D is true, complete
and correct.

Dated:  July 2, 1997


                            TUDOR INVESTMENT CORPORATION



                            By:   \s\ Andrew S. Paul
                                ---------------------------
                            Name:  Andrew S. Paul
                            Title: Vice President &
                                   General Counsel



                                \s\ Paul Tudor Jones, II
                            -------------------------------
                            Paul Tudor Jones, II



                            THE RAPTOR GLOBAL FUND LTD.

                            By: TUDOR INVESTMENT CORPORATION,
                                  Trading Advisor


                                By:   \s\ Andrew S. Paul
                                    -----------------------
                                Name:  Andrew S. Paul
                                Title: Vice President &
                                       General Counsel



                            THE RAPTOR GLOBAL FUND L.P.

                            By: TUDOR INVESTMENT CORPORATION,
                                  General Partner



                                By:   \s\ Andrew S. Paul
                                    -----------------------
                                Name:  Andrew S. Paul
                                Title: Vice President &
                                       General Counsel

                                    Page 15
<PAGE>
 
                            TUDOR ARBITRAGE PARTNERS L.P.

                            By: TUDOR GLOBAL TRADING LLC,
                                  General Partner



                                By:   \s\ Andrew S. Paul
                                    -----------------------
                                Name:  Andrew S. Paul
                                Title: Vice President &
                                       General Counsel



                            TUDOR GLOBAL TRADING LLC



                            By:   \s\ Andrew S. Paul
                                ---------------------------
                            Name:  Andrew S. Paul
                            Title: Vice President &
                                   General Counsel



                            TUDOR BVI FUTURES, LTD.

                            By: TUDOR INVESTMENT CORPORATION,
                                  Trading Advisor



                                By:   \s\ Andrew S. Paul
                                    -----------------------
                                Name:  Andrew S. Paul
                                Title: Vice President &
                                       General Counsel



                            THE UPPER MILL CAPITAL
                              APPRECIATION FUND LTD.

                            By: TUDOR INVESTMENT CORPORATION,
                                  Sub-Investment Manager


                                By:   \s\ Andrew S. Paul
                                    -----------------------
                                Name:  Andrew S. Paul
                                Title: Vice President &
                                       General Counsel

                                    Page 16
<PAGE>
 
                                   TUDOR PROPRIETARY TRADING, L.L.C.



                                   By: /s/ Andrew S. Paul
                                       ------------------------
                                   Name:  Andrew S. Paul
                                   Title: Vice President &
                                          General Counsel



                                    Page 17
<PAGE>
 
                                                            Schedule I

                              EXECUTIVE OFFICERS AND DIRECTORS
                              OF THE REPORTING PERSONS

I.  TIC

          The name, residence or business address, present principal occupation
or employment, the name, principal business and address of any corporation or
other organization in which such employment is conducted and the citizenship of
each executive officer or director of TIC is set forth below. Unless otherwise
indicated (i) the principal occupation or employment of such person is as an
executive officer or director of TIC, (ii) the business address of such person
is c/o TIC at the address of TIC set forth under Item 2 of this Schedule 13D,
(iii) such person is a citizen of the United States and (iv) to the knowledge of
the Reporting Persons, such person does not beneficially own and has not had any
transactions in the Common Stock.

                              Principal Occupation/
Name                          Business Address
- ----                          -----------------------------

Paul Tudor Jones, II*    Chairman of the Board of Directors, Chief Executive
                         Officer of TIC.

Mark F. Dalton           Director, President and Chief Operating Officer of TIC.

James J. Pallotta        Director and Vice President of TIC.

Mark A. Heffernan        Director of TIC.  Mr. Heffernan trades in
Citizen of United        securities and other financial instruments
Kingdom                  for TPT and certain investment funds advised
                         by Tudor Capital (U.K.), L.P.,
                         both of which are located at The Upper Mill, Kingston
                         Road, Ewell, Surrey  KT17 2AF, England.

Andrew S. Paul           Director, Vice President, General Counsel and Corporate
                         Secretary of TIC.

Richard L. Fisher        Director of TIC.  Mr. Fisher is Vice President of
                         Investments and Acquisitions and a Managing Director of
                         Dunavant Enterprises, Inc., 3797 Getwell Road, Memphis,
                         TN  38118.

Mark Pickard             Vice President and Chief Financial Officer of TIC.



- ----------
* See Item 5 of this Schedule 13D for a discussion of Mr. Jones' potential
beneficial ownership of Common Stock.

                                    Page 18
<PAGE>
 
II.  RAPTOR LTD.

          The name, residence or business address, present principal occupation
or employment, the name, principal business and address of any corporation or
other organization in which such employment is conducted and the citizenship of
each executive officer or director of Raptor Ltd. is set forth below. Unless
otherwise indicated (i) the principal occupation or employment of such person is
as set forth below, (ii) the business address of such person is c/o Inter
Caribbean Services Ltd., (iii) such person is a citizen of the country set forth
below and (iv) to the knowledge of the Reporting Persons, such person does not
beneficially own and has not had any transactions in the Common Stock.

                              Principal Occupation/
Name                          Business Address
- ----                          -------------------------------

Inter Caribbean Services Ltd.  Director of Raptor Ltd.  The principal place of
Incorporated in British        business of Inter Caribbean Services Ltd. is
Virgin Islands                 c/o Curacao International Trust Company N.V.
                               ("CITCO"), Kaya Flamboyan 9, Netherlands
                               Antilles.

Bernard A. Loze                Director of Raptor Ltd.  Chairman and Chief
Citizen of France              Executive Officer of Loze et Associe, 43, Avenue
                               Marceau, Paris 75116, France, which is a
                               consulting firm that provides financial and
                               investment advice to international clients.

Arpad A. Busson                Director of Raptor Ltd.  Chairman of European
Citizen of France              Investment Managers, c/o Harney, Westwood &
                               Riegels, P.O. Box 71, Road Town, Tortola, British
                               Virgin Islands, which is a consulting and money
                               management firm.

Jean-Pierre Jacquemoud         Director of Raptor Ltd.  Attorney, Jacquemoud &
Citizen of Switzerland         Stanislas, 2, rue Bellow, Geneva 1206,
                               Switzerland.

                                    Page 19
<PAGE>
 
III.  TUDOR GLOBAL TRADING LLC

          The name and present principal occupation or employment of each
executive officer of TGT is set forth below.  Each of such persons holds
identical titles for TIC and TGT.  The business address of such person is c/o
TIC at the address of TIC set forth under Item 2 of this Schedule 13D, each such
person is a citizen of the United States and to the knowledge of the Reporting
Persons, such person does not beneficially own and has not had any transactions
in the Common Stock.

 
Name                          Principal Occupation
- ----                          ---------------------------------------

Paul Tudor Jones, II*      Chairman of the Board of Directors, Chief Executive
                           Officer of TIC.

Mark F. Dalton             Director, President and Chief Operating Officer of
                           TIC.

James J. Pallotta          Director and Vice President of TIC.

Andrew S. Paul             Director, Vice President, General Counsel and
                           Corporate Secretary of TIC.

Mark Pickard               Vice President and Chief Financial Officer of TIC.


- ---------
* See Item 5 of this Schedule 13D for a discussion of Mr. Jones' potential
beneficial ownership of Common Stock.

                                    Page 20
<PAGE>
 
IV.  TUDOR BVI

          The name, residence or business address, present principal occupation
or employment, the name, principal business and address of any corporation or
other organization in which such employment is conducted and the citizenship of
each executive officer or director of Tudor BVI is set forth below.  To the
knowledge of the Reporting Persons, the below listed persons neither currently
beneficially own nor have had any transactions in the Common Stock.


                              Principal Occupation/
Name                          Business Address
- ----                          -------------------------------

Inter Caribbean Services Ltd.  Director of Tudor BVI.  See information under
                               Raptor Ltd.

David P. d'Abrumenil           Director of Tudor BVI.
Citizen of United Kingdom      Chairman, Lionspring Enterprises Limited, 36 John
                               Street, London WC1N 2AT, England, which is a
                               financial consulting firm.

Jean-Pierre Jacquemoud         Director of Tudor BVI.  See information under
                               Raptor Ltd.

Bernard A. Loze                Director of Tudor BVI. See information under
                               Raptor Ltd.

Arpad A. Busson                Director of Tudor BVI. See information under
                               Raptor Ltd.

Karl-Erbo G. Kageneck          Director of Tudor BVI. Attorney, King & Spalding,
                               120 West 45th Street, New York, New York 10036.

                                    Page 21
<PAGE>
 
V.  THE UPPER MILL CAPITAL APPRECIATION FUND LTD.

          The name, residence or business address, present principal occupation
or employment, the name, principal business and address of any corporation or
other organization in which such employment is conducted and the citizenship of
each executive officer or director of Upper Mill is set forth below.  To the
knowledge of the Reporting Persons, the below listed persons neither currently
beneficially own nor have had any transactions in the Common Stock.


                              Principal Occupation/
Name                          Business Address
- ----                          -------------------------------

Inter Caribbean Services Ltd.  Director of Upper Mill.  See information under
                               Raptor Ltd.

Jean-Pierre Jacquemoud         Director of Upper Mill.  See information under
                               Raptor Ltd.

Arpad A. Busson                Director of Upper Mill. See information under
                               Raptor Ltd.

Karl-Erbo G. Kageneck          Director of Upper Mill. See information under
                               Tudor BVI.

Anthony J. Stocks              Director of Upper Mill. Managing Director,
                               Curacao International Trust Company N.V., Kaya
                               Flamboyan 9, Curacao, Netherlands Antilles, which
                               provides administrative and other services to
                               investment funds.

                                    Page 22
<PAGE>
 
VI.  TUDOR PROPRIETARY TRADING, L.L.C.

        The name and present principal occupation or employment of each 
executive manager of TPT is set forth below. Each of such persons is a director
or officer of TIC. The business address of each such person is c/o TIC at the
address set forth under Item 2 of this Schedule 13D, with the exception of Mr.
Heffernan whose business address is c/o TPT at the address set forth under Item
2 of this Schedule 13D. Each such person is a citizen of the United States, with
the exception of Mr. Heffernan who is a citizen of the United Kingdom. To the
knowledge of the Reporting Persons, such person does not beneficially own and
has not had any transactions in the Common Stock.

 
Name                            Principal Occupation
- ----                            --------------------

Paul Tudor Jones, II*      Chairman of the Board of Directors, Chief Executive
                           Officer of TIC.

Mark F. Dalton             Director, President and Chief Operating Officer of
                           TIC.

James J. Pallotta          Director and Vice President of TIC.

Andrew S. Paul             Director, Vice President, General Counsel and
                           Corporate Secretary of TIC.

Mark A. Heffernan          Director of TIC and Vice President of TPT.

Mark Pickard               Vice President and Chief Financial Officer of TIC.



- ----------------------
* See Item 5 of this Schedule 13D for a discussion of Mr. Jones' potential
beneficial ownership of Common Stock.             

                                       23
<PAGE>
 
                                                            Schedule II

                                TRANSACTIONS

     All shares of Common Stock were purchased or sold in open market
transactions for cash.
<TABLE>
<CAPTION>
 
Tudor BVI
- -------------
<S>            <C>              <C>           <C>
 
Date           Transaction      # Shares      $/Share
- -------------  ---------------  ------------  -----------
5/5/97         Purchase                3,600     $18.625
5/6/97         Purchase                1,800     $18.125
5/6/97         Purchase                8,400     $18.5612
5/20/97        Purchase                1,800     $20.0278
5/22/97        Purchase                  900     $20.2212
6/11/97        Purchase                  100     $19.500
6/20/97        Purchase                2,200     $20.750
6/23/97        Purchase                2,000     $20.8683
6/30/97        Purchase                  800     $20.5114
6/30/97        Purchase                5,400     $22.7917
7/1/97         Sale                    4,000     $22.500
 
Total Common Stock beneficially owned as of the date this Schedule 13D: 128,400
 
Raptor L.P.
- -------------
 
Date           Transaction      # Shares      $/Share
- -------------  ---------------  ------------  -----------
5/5/97         Purchase                1,500     $18.625
5/6/97         Purchase                  800     $18.125
5/6/97         Purchase                3,500     $18.5612
5/20/97        Purchase                  700     $20.0278
5/22/97        Purchase                  400     $20.2212
6/20/97        Purchase                  900     $20.750
6/23/97        Purchase                  800     $20.8683
6/30/97        Purchase                  300     $20.5114
6/30/97        Purchase                2,200     $22.7917 

Total Common Stock beneficially owned as of the date of this Schedule 13D:
53,600
 
TAP
- ---
 
Date           Transaction      # Shares      $/Share
- -------------  ---------------  ------------  -----------
5/5/97         Purchase                  600     $18.625
5/6/97         Purchase                  300     $18.125
5/6/97         Purchase                1,500     $18.5612
5/20/97        Purchase                  200     $20.0278
5/22/97        Purchase                  200     $20.2212
6/20/97        Purchase                  400     $20.750
6/23/97        Purchase                  300     $20.8683
6/30/97        Purchase                  200     $20.5114
6/30/97        Purchase                  900     $22.7917
</TABLE>

Total Common Stock beneficially owned as of the date of this Schedule 13D:
22,600

                                    Page 24
<PAGE>
 
<TABLE>
<CAPTION>
 
Raptor Ltd.
- -----------------------------
<S>           <C>              <C>           <C>
 
Date          Transaction      # Shares      $/Share
- ------------  ---------------  ------------  -----------
5/5/97        Purchase                3,700     $18.625
5/6/97        Purchase                1,800     $18.125
5/6/97        Purchase                8,700     $18.5612
5/20/97       Purchase                1,800     $20.0278
5/22/97       Purchase                  900     $20.2212
6/20/97       Purchase                2,400     $20.750
6/23/97       Purchase                2,100     $20.8683
6/30/97       Purchase                  800     $20.5114
6/30/97       Purchase                5,600     $22.7917 

Total Common Stock beneficially owned as of the date of this Schedule 13D:
132,900
 
Upper Mill
- ------------
 
Date          Transaction      # Shares      $/Share
- ------------  ---------------  ------------  -----------
5/2/97        Purchase                7,000     $19.250
5/5/97        Purchase                  600     $18.625
5/6/97        Purchase                  300     $18.125
5/6/97        Purchase                1,400     $18.5612
5/22/97       Purchase                  200     $20.2212
6/20/97       Purchase                  400     $20.750
6/23/97       Purchase                  400     $20.8683
6/30/97       Purchase                  100     $20.5114
6/30/97       Purchase                  900     $22.7917 

Total Common Stock beneficially owned as of the date of this Schedule 13D:
21,900

Tudor Proprietary Trading, L.L.C.
- ----------------------------------

Date          Transaction      # Shares      $/Share
- ------------  ---------------  ------------  -----------
7/1/97        Sale                    4,000     $22.500 
</TABLE> 

Total Common Stock beneficially owned as of the date of this Schedule 13D:
0

                                    Page 25
<PAGE>
 
EXHIBIT INDEX
- -------------



Exhibit No.            Description
- -----------            ----------------------

   (1)                 Joint Filing Statement

                                    Page 26
<PAGE>
 
                                                            EXHIBIT 1


                              JOINT FILING AGREEMENT


          Pursuant to Rule 13d-1(f) of the Securities Exchange Act of 1934, as
amended, the undersigned hereby agree to the joint filing of the Schedule 13D
and any amendments thereto, relating to the Common Stock, par value $.001 per
share, of INTERCARDIA, INC. and the inclusion of this Joint Filing Agreement as
an Exhibit to such Joint Filings.  Each party to this Joint Filing Agreement
expressly authorizes each other party to file on its behalf any and all
amendments to such Statement.  This Agreement may be executed in any number of
counterparts, each of which shall be deemed an original, and all of which shall
constitute one and the same instrument.

Dated:  July 2, 1997



                            TUDOR INVESTMENT CORPORATION



                            By:   \s\ Andrew S. Paul
                                ---------------------------
                            Name:  Andrew S. Paul
                            Title: Vice President &
                                   General Counsel



                                \s\ Paul Tudor Jones, II
                              -----------------------------
                            Paul Tudor Jones, II



                            THE RAPTOR GLOBAL FUND LTD.

                            By: TUDOR INVESTMENT CORPORATION,
                                  Trading Advisor


                                By:   \s\ Andrew S. Paul
                                    -----------------------
                                Name:  Andrew S. Paul
                                Title: Vice President &
                                       General Counsel

                                    Page 27
<PAGE>
 
                            THE RAPTOR GLOBAL FUND L.P.

                            By: TUDOR INVESTMENT CORPORATION,
                                  General Partner



                                By:   \s\ Andrew S. Paul
                                    -----------------------
                                Name:  Andrew S. Paul
                                Title: Vice President &
                                       General Counsel



                            TUDOR ARBITRAGE PARTNERS L.P.

                            By: TUDOR GLOBAL TRADING LLC,
                                  General Partner



                                By:   \s\ Andrew S. Paul
                                    -----------------------
                                Name:  Andrew S. Paul
                                Title: Vice President &
                                       General Counsel



                            TUDOR GLOBAL TRADING LLC



                            By:   \s\ Andrew S. Paul
                                ---------------------------
                            Name:  Andrew S. Paul
                            Title: Vice President &
                                   General Counsel



                            TUDOR BVI FUTURES, LTD.

                            By: TUDOR INVESTMENT CORPORATION,
                                  Trading Advisor



                                By:   \s\ Andrew S. Paul
                                    -----------------------
                                Name:  Andrew S. Paul
                                Title: Vice President &
                                       General Counsel

                                    Page 28
<PAGE>
 
                            THE UPPER MILL CAPITAL
                              APPRECIATION FUND LTD.

                            By: TUDOR INVESTMENT CORPORATION,
                                  Sub-Investment Manager


                                By:   \s\ Andrew S. Paul
                                    -----------------------
                                Name:  Andrew S. Paul   
                                Title: Vice President & 
                                       General Counsel   


                            TUDOR PROPRIETARY TRADING, L.L.C.


                            By: \s\ Andrew S. Paul
                                ---------------------------
                             Name:  Andrew S. Paul   
                             Title: Vice President & 
                                    General Counsel   

                                    Page 29


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