ADAGE CAPITAL PARTNERS GP, L.L.C.

Position in THG — Hanover Insurance Group, Inc.

CIK 1165408 Boston, MA

Position in THG

as of Mar 31, 2026 · filed May 15, 2026 Compact

Position Value

$37,334,389

+$24,906,029 QoQ

Shares Held

215,370

+216.7% QoQ

Ownership

0.616%

of shares outstanding

% of Portfolio

0.06%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Sep 2024

7 quarters on record

Voting authority Sole 100.ToString("F0")% Shared 0.ToString("F0")% None 0.ToString("F0")%

Financial Services · as of Mar 31, 2026

ADAGE CAPITAL PARTNERS GP, L.L.C. holds $605,827,603 across 11 Insurance - Property & Casualty names. THG ranks #5 (6.2% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	CB	Chubb Ltd	595,883	$194,216,146
2	PGR	Progressive Corp/Oh/	510,085	$101,119,250
3	TRV	Travelers Companies, Inc.	335,304	$97,801,470
4	AIZ	Assurant, Inc.	344,640	$75,066,038
5	THG	Hanover Insurance Group, Inc. This page	215,370	$37,334,389
6	ALL	Allstate Corp	165,919	$34,401,645
7	KMPR	KEMPER Corp	800,000	$24,448,000
8	SAFT	Safety Insurance Group Inc	300,000	$21,792,000

7 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$37,334,389	215,370	+216.7%	Shares	Sole	2026-05-15
2025-12-31	$12,428,360	68,000	-65.7%	Shares	Sole	2026-02-17
2025-09-30	$35,962,740	198,000	-64.5%	Shares	Sole	2025-11-14
2025-06-30	$94,787,460	558,000	+52.9%	Shares	Sole	2025-08-14
2025-03-31	$63,491,750	365,000	+26.3%	Shares	Sole	2025-05-15
2024-12-31	$44,681,274	288,900	+3.2%	Shares	Sole	2025-02-14
2024-09-30	$41,470,800	280,000	—	Shares	Sole	2024-11-14
No filing history on record for this holder in this stock.