FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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(Print or Type Responses)

1. Name and Address of Reporting Person *   ARCH CAPITAL GROUP LTD. 2. Date of Event Requiring Statement (Month/Day/Year) 03/26/2019 3. Issuer Name and Ticker or Trading Symbol Watford Holdings Ltd. [WTRE] (Last) (First) (Middle) 100 PITTS BAY ROAD, WATERLOO HOUSE, GROUND FLOOR 4. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director __X__ 10% Owner _____ Officer (give title below) _____ Other (specify below) 5. If Amendment, Date Original Filed(Month/Day/Year) (Street) PEMBROKE, D0 HM 08 6. Individual or Joint/Group Filing(Check Applicable Line) ___ Form filed by One Reporting Person _X_ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Beneficially Owned

1.Title of Security (Instr. 4) 2. Amount of Securities Beneficially Owned (Instr. 4) 3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 4. Nature of Indirect Beneficial Ownership (Instr. 5) Common Shares, $0.01 par value per share 2,500,000 I (1) See Footnote 1 8.5% Cumulative Redeemable Preference Shares 600,000 I (2) See Footnote 2

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.			SEC 1473 (7-02)
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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Warrants	  (3)	03/31/2020	Common Shares, $0.01 par value per share	975,503	$ (4)	I	See Footnote 1

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
ARCH CAPITAL GROUP LTD. 100 PITTS BAY ROAD WATERLOO HOUSE, GROUND FLOOR PEMBROKE, D0 HM 08	Â	  X	Â	Â
ARCH REINSURANCE LTD. 100 PITTS BAY ROAD WATERLOO HOUSE, 1ST FLOOR PEMBROKE, D0 HM 08	Â	  X	Â	Â

Signatures

Marcy Rathman, Attorney in fact		03/26/2019
**Signature of Reporting Person		Date
Marcy Rathman, Attorney in fact		03/26/2019
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 5(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	The reported securities are owned directly by Arch Reinsurance Ltd., a Bermuda company and a wholly owned subsidiary of Arch Capital Group Ltd., a Bermuda company.
(2)	The reported securities are owned by Arch Capital Group Ltd.'s wholly owned subsidiary, Gulf Reinsurance Limited, a Dubai International Financial Centre company.
(3)	The warrants are exercisable at any time following the listing of the issuer's common shares on the NASDAQ Global Select Market.
(4)	The exercise price of the warrants is determined on the date of exercise so that, if all such warrants then outstanding were exercised in full on such exercise date in respect of the common shares then subject to such warrants, initial holders who purchased common shares in the issuer's original private placement would achieve a 15% target return (including dilution from such warrants and excluding dilution from start-up expenses related to the issuer's formation and original private placement or any warrants the issuer may issue in the future) from March 25, 2014, the initial closing of the issuer's original private placement, through the date of such exercise, based on the $40.00 initial purchase price per common share paid by such initial holders and the market value of the common shares that would be necessary for the initial holders to achieve such target return if the initial holders disposed of their common shares on the date of such exercise.

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