UNITED STATES SECURITIES AND EXCHANGE COMMISSION

The Securities and Exchange Commission has not necessarily reviewed the information in this filing and has not determined if it is accurate and complete.

The reader should not assume that the information is accurate and complete.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 13F

OMB APPROVAL

OMB Number: 3235-0006 Expires: July 31, 2015 Estimated average burden hours per response: 23.8

FORM 13F COVER PAGE

Report for the Calendar Year or Quarter Ended: 03-31-2019

Check here if Amendment:

Amendment Number:

This Amendment (Check only one.):

is a restatement.

adds new holdings entries.

Institutional Investment Manager Filing this Report:

Name: Address:

ALLEGHANY CORP /DE 1411 Broadway 34th Floor New York NY 10018

Form 13F File Number: 028-01590

The institutional investment manager filing this report and the person by whom it is signed hereby represent that the person signing the report is authorized to submit it, that all information contained herein is true, correct and complete, and that it is understood that all required items, statements, schedules, lists, and tables, are considered integral parts of this form.

Person Signing this Report on Behalf of Reporting Manager:

Name:

Title: Phone:

John L. Sennott, Jr. Manager (212) 752-1356

Signature, Place, and Date of Signing:

/s/ John L. Sennott, Jr. [Signature]

New York, NEW YORK [City, State]

Do you wish to provide information pursuant to Special Instruction 5?

05-10-2019 [Date]

Yes X No

Report Type (Check only one.):

X 13F HOLDINGS REPORT. (Check here if all holdings of this reporting manager are reported in this report.) 13F NOTICE. (Check here if no holdings reported are in this report, and all holdings are reported by other reporting manager(s).) 13F COMBINATION REPORT. (Check here if a portion of the holdings for this reporting manager are reported in this report and a portion are

reported by other reporting manager(s).)

Report Summary:

Number of Other Included Managers: Form 13F Information table Entry Total: Form 13F Information table Value Total:

Form 13F Summary Page

5 54 2,109,689 (thousands)

List of Other Included Managers:

Provide a numbered list of the name(s) and Form 13F number(s) of all institutional investement managers with respect to which this report is filed, other than the manager filing this report.

No. Form 13F File Number Name

CIK

2 28-10508 3 28-06459 4 28-12262 5 28-15020 6 28-16393

RSUI Indemnity Company Alleghany Insurance Holdings LLC Capitol Indemnity Corporation Transatlantic Reinsurance Company Roundwood Asset Management LLC

COLUMN 1

NAME OF ISSUER

AIR PRODS & CHEMS INC AIR PRODS & CHEMS INC AIR PRODS & CHEMS INC ALPHABET INC ALPHABET INC ALPHABET INC AMAZON COM INC AMAZON COM INC AMAZON COM INC APPLE INC APPLE INC APPLE INC APPLE INC ARES MANAGEMENT CORPORATION BERKSHIRE HATHAWAY INC DEL BERKSHIRE HATHAWAY INC DEL BERKSHIRE HATHAWAY INC DEL CIGNA CORP NEW CIGNA CORP NEW CIGNA CORP NEW COMCAST CORP NEW COMCAST CORP NEW COMCAST CORP NEW CSX CORP CSX CORP CSX CORP DELTA AIR LINES INC DEL DELTA AIR LINES INC DEL DELTA AIR LINES INC DEL JPMORGAN CHASE & CO JPMORGAN CHASE & CO JPMORGAN CHASE & CO MARSH & MCLENNAN COS INC MASTERCARD INC MASTERCARD INC MASTERCARD INC MICROSOFT CORP MICROSOFT CORP MICROSOFT CORP OLD REP INTL CORP ROPER TECHNOLOGIES INC ROPER TECHNOLOGIES INC ROPER TECHNOLOGIES INC SERVICE CORP INTL SERVICE CORP INTL SERVICE CORP INTL THERMO FISHER SCIENTIFIC INC THERMO FISHER SCIENTIFIC INC THERMO FISHER SCIENTIFIC INC VISA INC VISA INC VISA INC VISA INC

FORM 13F INFORMATION TABLE

COLUMN 2

TITLE OF CLASS

COM COM COM CAP STK CL A CAP STK CL A CAP STK CL A COM COM COM COM COM COM COM CL A COM STK CL B NEW CL B NEW CL B NEW COM COM COM CL A CL A CL A COM COM COM COM NEW COM NEW COM NEW COM COM COM COM CL A CL A CL A COM COM COM COM COM COM COM COM COM COM COM COM COM COM CL A COM CL A COM CL A COM CL A

COLUMN 3

COLUMN 4

COLUMN 5

CUSIP

VALUE (x$1000)

SHRS OR PRN AMT

SH / PRN

009158106 009158106 009158106 02079K305 02079K305 02079K305 023135106 023135106 023135106 037833100 037833100 037833100 037833100 03990B101 084670702 084670702 084670702 125523100 125523100 125523100 20030N101 20030N101 20030N101 126408103 126408103 126408103 247361702 247361702 247361702 46625H100 46625H100 46625H100 571748102 57636Q104 57636Q104 57636Q104 594918104 594918104 594918104 680223104 776696106 776696106 776696106 817565104 817565104 817565104 883556102 883556102 883556102 92826C839 92826C839 92826C839 92826C839

17,571

92,013

SH

5,372

28,132

SH

49,240

257,855

SH

39,425

33,499

SH

10,124

8,602

SH

111,262

94,539

SH

12,483

7,010

SH

3,216

1,806

SH

35,052

19,684

SH

42,549

224,000

SH

8,550

45,010

SH

47,676

250,990

SH

86,427

455,000

SH

133,090 5,734,157

SH

18,905

94,106

SH

3,998

19,900

SH

47,208

234,994

SH

10,124

62,952

SH

2,531

15,739

SH

26,746

166,309

SH

20,594

515,103

SH

5,283

132,129

SH

54,963 1,374,768

SH

1,572

21,013

SH

227,079 3,035,000

SH

14,963

199,987

SH

8,004

154,969

SH

5,855

113,367

SH

34,588

669,664

SH

21,664

214,010

SH

2,811

27,765

SH

77,059

761,225

SH

93,900 1,000,000

SH

7,815

33,193

SH

1,781

7,564

SH

33,962

144,243

SH

50,579

428,850

SH

4,533

38,435

SH

124,580 1,056,301

SH

64,329 3,075,000

SH

41,393

121,044

SH

11,628

34,002

SH

139,166

406,954

SH

13,977

348,112

SH

3,607

89,835

SH

31,921

795,053

SH

31,203

113,996

SH

6,992

25,543

SH

84,158

307,461

SH

3,359

21,509

SH

51,007

326,569

SH

12,981

83,110

SH

6,071

38,870

SH

PUT / CALL

-

COLUMN 6

COLUMN 7

INVESTMENT DISCRETION

OTHER MANAGER

DFND DFND DFND DFND DFND DFND DFND DFND DFND DFND DFND DFND DFND DFND DFND DFND DFND DFND DFND DFND DFND DFND DFND DFND DFND DFND DFND DFND DFND DFND DFND DFND DFND DFND DFND DFND DFND DFND DFND DFND DFND DFND DFND DFND DFND DFND DFND DFND DFND DFND DFND DFND DFND

2,3,6 3,4,6 5,6 2,3,6 3,4,6 5,6 2,3,6 3,4,6 5,6 2,3,6 3,4,6 3,6 5,6 3,6 2,3,6 3,4,6 5,6 2,3,6 3,4,6 5,6 2,3,6 3,4,6 5,6 3,4,6 3,6 5,6 2,3,6 3,4,6 5,6 2,3,6 3,4,6 5,6 3,6 2,3,6 3,4,6 5,6 2,3,6 3,4,6 5,6 3,6 2,3,6 3,4,6 5,6 2,3,6 3,4,6 5,6 2,3,6 3,4,6 5,6 0,6 2,3,6 3,4,6 3,6

COLUMN 8

VOTING AUTHORITY

SOLE

SHARED

NONE

92,013

0

0

28,132

0

0

257,855

0

0

33,499

0

0

8,602

0

0

94,539

0

0

7,010

0

0

1,806

0

0

19,684

0

0

224,000

0

0

45,010

0

0

250,990

0

0

455,000

0

0

5,734,157

0

0

94,106

0

0

19,900

0

0

234,994

0

0

62,952

0

0

15,739

0

0

166,309

0

0

515,103

0

0

132,129

0

0

1,374,768

0

0

21,013

0

0

3,035,000

0

0

199,987

0

0

154,969

0

0

113,367

0

0

669,664

0

0

214,010

0

0

27,765

0

0

761,225

0

0

1,000,000

0

0

33,193

0

0

7,564

0

0

144,243

0

0

428,850

0

0

38,435

0

0

1,056,301

0

0

3,075,000

0

0

121,044

0

0

34,002

0

0

406,954

0

0

348,112

0

0

89,835

0

0

795,053

0

0

113,996

0

0

25,543

0

0

307,461

0

0

21,509

0

0

326,569

0

0

83,110

0

0

38,870

0

0

VISA INC

COM CL A

92826C839

104,763

670,740

SH

-

DFND 5,6

670,740

0

0

 ................
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