SECURITIES AND EXCHANGE COMMISSION
				WASHINGTON, DC  20549

				---------------------

				    SCHEDULE 13D
				   (Rule 13d-101)

		 INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT
		TO RULE 13d-1(a) AND AMENDMENTS THERETO FILED PURSUANT TO
				RULE 13d-2(a)

				(Amendment No. 3)1

			 AMERICAN MEDICAL SECURITY GROUP, INC.
			     --------------------------
				   (Name of Issuer)

	       		Common Stock, No Par Value
			    -----------------------------
			    (Title of Class of Securities)

				     02744P101
				    ------------
				   (CUSIP Number)

				Scott B. Bernstein, Esq.
				Caxton Associates, L.L.C.
				731 Alexander Road, Bldg. 2
				Princeton, New Jersey  08540
					(609) 419-1800

(Name, Address and Telephone Number of Person Authorized to Receive Notices
 and Communications)

				    August 23, 2001
			------------------------------------
 	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 that is the subject of this Schedule 13D, and is filing
 this schedule because of Rule 13d-1 (e), 13d-1 (f), or 13d-1 (g), check the
 following box  o.

Note.  Schedules filed in paper format shall include a signed original and
five copies of the schedule, including all exhibits.  See Rule 13d-7(b) for
other parties to whom copies are to be sent.

(Continued on following pages)

(Page 1 of 9 Pages)
_________________
1	The remainder of this cover page shall be filled out for a reporting
person's initial filing on this form with respect to the subject class of
securities, and for any subsequent amendment containing information which
would alter disclosures provided in a prior cover page.
The information required on the remainder of this cover page shall not be
 deemed to be "filed" for the purpose of Section 18 of the Securities
Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that
section of the Act but shall be subject to all other provisions of the Act
(however, see the Notes).



				SCHEDULE 13D

CUSIP NO. 02744P101

1  NAME OF REPORTING PERSONS
   S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON (ENTITIES ONLY)

   Caxton International Limited
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2  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*	(a)  |_|
							(b)  |_|
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3  SEC USE ONLY

-----------------------------------------------------------------------------
4  SOURCE OF FUNDS*

   WC
-----------------------------------------------------------------------------
5  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
   ITEMS 2(d) or 2(e)					|_|

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6  CITIZENSHIP OR PLACE OF ORGANIZATION
   British Virgin Islands

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NUMBER OF	7  SOLE VOTING POWER
   		0
SHARES	-------------------------------------------------------------

BENEFICIALLY	8  SHARED VOTING POWER
   		808,400
OWNED BY	-------------------------------------------------------------

EACH		9  SOLE DISPOSITIVE POWER
		0
REPORTING	-------------------------------------------------------------

PERSON		10 SHARED DISPOSITIVE POWER
		808,400
WITH
		-------------------------------------------------------------
11   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
     808,400
-----------------------------------------------------------------------------
12   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*

-----------------------------------------------------------------------------
13   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

     5.8%
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14   TYPE OF REPORTING PERSON*

     CO
-----------------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!



			 SCHEDULE 13D

CUSIP NO. 02744P101

1  NAME OF REPORTING PERSONS
   S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON (ENTITIES ONLY)

   Bruce S. Kovner
-----------------------------------------------------------------------------
2  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*	(a)  |_|
							(b)  |_|
-----------------------------------------------------------------------------

3  SEC USE ONLY

-----------------------------------------------------------------------------
4  SOURCE OF FUNDS*

   Not Applicable
-----------------------------------------------------------------------------
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

-----------------------------------------------------------------------------
NUMBER OF	7  SOLE VOTING POWER
   		0
SHARES		-------------------------------------------------------------

BENEFICIALLY	8  SHARED VOTING POWER
   		808,400
OWNED BY	-------------------------------------------------------------

EACH		9  SOLE DISPOSITIVE POWER
		0
REPORTING	-------------------------------------------------------------

PERSON		10 SHARED DISPOSITIVE POWER
		808,400
WITH
		-------------------------------------------------------------
11   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
     808,400
-----------------------------------------------------------------------------
12   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*

-----------------------------------------------------------------------------
13   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

     5.8%
-----------------------------------------------------------------------------
14   TYPE OF REPORTING PERSON*

     IN
-----------------------------------------------------------------------------

*SEE INSTRUCTIONS BEFORE FILLING OUT!

	This Amendment 3 to Schedule 13D relates to the Common Stock, no par
Value (the "Common Stock"), of American Medical Security Group, Inc., a
Wisconsin corporation (the "Company"), 3100 AMS Blvd., Green Bay, WI  54313.

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

		Item 3 of the Schedule 13D is hereby amended by replacing the
		paragraph therein with the following paragraph:

		A net aggregate of $1,849,246.28 (excluding commissions, if
		any) was received in a series of transactions pursuant to
		which Caxton International acquired and sold the shares of
		common Stock since December 28, 2000.  The purchase price
		for any such acquired shares was paid out of Caxton
		International's working capital.

Item 4.		Purpose of Transaction.

		Item 4 of the Schedule 13D is hereby amended by replacing the
		paragraph therein with the following paragraph:

The persons filing this Report have supported recent actions taken by the
Company to restore its profitability, however, (a) continue to believe that
the Common Stock is under-valued, (b) are concerned that steps taken by the
Company to date have been insufficient, as it is believed they may take too
long to positively impact share value, (c) believe anti-takeover provisions
recently adopted by the Company are detrimental to shareholders, and
(d) believe that management must take further immediate steps to enhance
shareholder value in order to prevent a deterioration of the underlying value
of the Company through its current strategy of supporting under-performing
business operations.

The persons filing this Report have discussed their concerns with management,
other shareholders and potential financial and strategic investors in the
Company.  The persons filing this Report are also examining all of their
options with respect to the possibility of taking actions, which they believe
will enhance shareholder value.  Such actions could include proposing that
management pursue an extraordinary corporate transaction, such as a merger,
reorganization or liquidation or encouraging, participating or leading a
proxy contest to change the Company's Chairman and/or Board of Directors.
Any such actions could relate to or result in one or more of the matters
referred to in paragraphs (a) through (j) of Item 4 of Schedule 13D.

Each of the persons filing this Report also reserves the right to purchase or
otherwise acquire additional Common Stock or to sell or otherwise dispose of
Common Stock owned by it, in each case in open market or privately negotiated
transactions or otherwise.



Item 5.		Interest in Securities of the Issuer.

	The first paragraph of subparagraph (a) of Item 5 of the Schedule
	D is hereby amended by replacing said paragraph with the following
	paragraph:

	(a)  Caxton International beneficially owns 808,400 shares of
	Common Stock, representing approximately 5.8% of the total shares
	of Common Stock issued and outstanding.  The decrease in beneficial
	ownership from the date of Amendment No. 2 to Schedule 13D filed
	August 23, 2001 is a result of Caxton International's net sale
	of Common Stock as set forth in Schedule A.

	Subparagraph (c) of Item 5 of the Schedule 13D is hereby amended
	by adding the following sentence:

(c)  Caxton International Limited acquired additional shares and/or sold
	shares of Common Stock in a series of open market
	transactions effected primarily with independent brokers and, to
	a lesser extent, directly with market makers utilizing the NASDAQ
	System, between December 28, 2000 and August 23, 2001.  See
	Schedule A for disclosure of (1) the date, (2) the price and
	(3) the amount of shares purchased and/or sold by Caxton
	International during the past 60 days.


	After reasonable inquiry and to the best of the undersigned's knowledge
and belief, the undersigned certify that the information set forth in this
statement is true, complete and correct.


August 29, 2001



CAXTON INTERNATIONAL LIMITED


By:/s/Joseph Kelly
      Name:  Joseph Kelly
      Title:   Vice President & Treasurer


By:/s/Maxwell Quin
      Name:  Maxwell Quin
      Title:   Vice President & Secretary


/s/Bruce S. Kovner
Bruce S. Kovner, by Scott B. Bernstein as
Attorney-in-Fact




						Schedule A

	Caxton International Limited
		No of Shares	Price Per Share
Trade Date	Purchased (Sold)	(Excluding Commission)

22-Jun-01	 1,000 	 	5.92500
10-Aug-01	 (1,800)	 	5.61000
13-Aug-01	 2,000 	 	5.95000
14-Aug-01	 (11,300)	 	6.13270
14-Aug-01	 (38,700)	 	6.15000
16-Aug-01	 (20,000)	 	6.30000
20-Aug-01	 (10,000)	 	6.40000
21-Aug-01	 (25,000)	 	6.40000
23-Aug-01	 (182,500)	 	6.55010





			Exhibit Index

Exhibit 1 - Joint Acquisition Statement Pursuant To
Rule 13d-1(k)(1).





							Exhibit 1


			JOINT ACQUISITION STATEMENT
			PURSUANT TO RULE 13d-1(k)(l)

The undersigned acknowledge and agree that the foregoing
statement on Schedule 13D is filed on behalf of each of the undersigned
and that all subsequent amendments to this statement on Schedule 13D shall
be filed on behalf of each of the undersigned without the necessity of
filing additional joint acquisition statements.  The undersigned acknowledge
that each shall be responsible for the timely filing of such amendments,
and for the completeness and accuracy of the information concerning him
or it contained therein, but shall not be responsible for the completeness
and accuracy of the information concerning the other, except to the extent
that he or it knows or has reason to believe that such information is
inaccurate.

Dated:  August 29, 2001			CAXTON INTERNATIONAL LIMITED

               			      By:/s/Joseph Kelly
				      Name:  Joseph Kelly
				      Title:    Vice President & Treasurer

				      By:/s/Maxwell Quin
				      Name:  Maxwell Quin
				      Title:    Vice President & Secretary


			              /s/Bruce S. Kovner
   				      Bruce S. Kovner, by Scott B. Bernstein
				      as Attorney-in-Fact