546 institutional investment managers reported THG positions in their Form 13F filings for Q2 2026, holding 32,030,260 shares worth $6.8B in total. BlackRock, Inc. reported the largest position.

Are funds buying or selling THG?

In Q2 2026, 79 managers opened new THG positions, 201 added, 163 trimmed and 39 sold out. Managers that filed in both quarters added a net 730,140 shares.

How current is this THG institutional ownership data?

It covers holdings as of the end of Q2 2026. Managers have 45 days after the quarter ends to file Form 13F (by August 14, 2026 for Q2 2026), so positions may have changed since.

Funds · THG

Who owns THG?

Institutional ownership of Hanover Insurance Group Inc from Form 13F, Q2 2026

546 institutional managers reported holding Hanover Insurance Group Inc (THG) in Form 13F filings for Q2 2026, with 32,030,260 shares worth $6.8B. The largest reported holder was BlackRock, Inc. Managers that filed both quarters added a net 730,140 shares (+2.3%). 79 opened new positions and 39 sold out.

Funds holding: 546
Value held: $6.8B
New / sold out: 79 / 39
Net shares, same filers: +2.3%

Holdings as of June 30, 2026, the end of Q2 2026. Managers have 45 days after a quarter ends to file Form 13F (by August 14, 2026 for Q2 2026), so positions may have changed since.

Largest holders of THG

Fund	Value	Share of 13F holdings	Shares	Move
BlackRock, Inc.	$756M	11.0%	3,532,932	Trimmed
Vanguard Portfolio Management LLC	$411M	6.0%	1,919,628	Trimmed
Price T Rowe Associates Inc	$392M	5.7%	1,831,579	Added
State Street Corp	$348M	5.1%	1,627,020	Trimmed
Vanguard Capital Management LLC	$312M	4.6%	1,458,761	Added
AQR Capital Management LLC	$287M	4.2%	1,341,075	Added
Fuller & Thaler Asset Management, Inc.	$233M	3.4%	1,089,705	Added
American Century Companies Inc	$231M	3.4%	1,078,105	Added
Dimensional Fund Advisors LP	$221M	3.2%	1,030,544	Added
First Trust Advisors LP	$176M	2.6%	824,257	Trimmed
Alliancebernstein L.p.	$158M	2.8%	909,130	Added
Geode Capital Management, LLC	$156M	2.3%	729,091	Added
Ameriprise Financial Inc	$150M	2.2%	699,163	Added
Massachusetts Financial Services Co	$128M	1.9%	595,647	Trimmed
Charles Schwab Investment Management Inc	$97.1M	1.4%	453,309	Trimmed
Invesco Ltd.	$96.9M	1.4%	452,418	Trimmed
Morgan Stanley	$96.6M	1.4%	450,920	Trimmed
Norges Bank	$95.8M	1.4%	447,262	New
Vaughan Nelson Investment Management, L.p.	$79.8M	1.2%	372,514	Added
London Co of Virginia	$77.3M	1.1%	360,801	Trimmed
Northern Trust Corp	$73.2M	1.1%	342,036	Unchanged
Allspring Global Investments Holdings, LLC	$72.3M	1.0%	333,520	Trimmed
Goldman Sachs Group Inc	$70.5M	1.0%	329,424	Added
Bank of New York Mellon Corp	$69.5M	1.0%	324,496	Trimmed
Woodline Partners LP	$68.9M	1.0%	321,972	Trimmed

Share of 13F holdings is each fund's shares as a share of the 32,030,260 THG shares all 13F filers reported, not of shares outstanding.

Biggest buyers in Q2 2026

Price T Rowe Associates Inc Added+$95.8M
Norges Bank New+$95.8M
AQR Capital Management LLC Added+$70.2M
Vaughan Nelson Investment Management, L.p. Added+$44.5M
Principal Financial Group Inc Added+$44.0M
Goldman Sachs Group Inc Added+$23.7M
Fuller & Thaler Asset Management, Inc. Added+$21.4M
Quantinno Capital Management LP Added+$17.4M
Two Sigma Investments, LP Added+$16.7M
American Century Companies Inc Added+$16.2M

Biggest sellers in Q2 2026

Qube Research & Technologies Ltd Trimmed-$39.0M
Adage Capital Partners GP, L.l.c. Sold out-$37.3M
BlackRock, Inc. Trimmed-$31.7M
UBS Group AG Trimmed-$27.3M
Jacobs Levy Equity Management, Inc Sold out-$26.5M
Balyasny Asset Management L.P. Sold out-$24.9M
Citadel Advisors LLC Trimmed-$24.1M
Millennium Management LLC Trimmed-$23.3M
Franklin Resources Inc Trimmed-$21.0M
Woodline Partners LP Trimmed-$20.8M

The change in shares since the quarter before, adjusted for stock splits and priced at the Q2 2026 value per share. Funds bought $707M and sold $526M; 201 added and 163 trimmed.

Schedule 13D and 13G filings on THG

Owners of more than 5% must file within days, so these can be newer than the 13F data.

2026-08-14PRICE T ROWE ASSOCIATES INC /MD/ SCHEDULE 13G filed by Hanover Insurance Group IncSchedule 13G

Questions about THG ownership

Who owns THG stock?: 546 institutional investment managers reported THG positions in their Form 13F filings for Q2 2026, holding 32,030,260 shares worth $6.8B in total. BlackRock, Inc. reported the largest position.
Are funds buying or selling THG?: In Q2 2026, 79 managers opened new THG positions, 201 added, 163 trimmed and 39 sold out. Managers that filed in both quarters added a net 730,140 shares.
How current is this THG institutional ownership data?: It covers holdings as of the end of Q2 2026. Managers have 45 days after the quarter ends to file Form 13F (by August 14, 2026 for Q2 2026), so positions may have changed since.

From the SEC's Form 13F data sets for Q2 2026: every 13F holdings report, matched to THG by CUSIP. Options are left out. THG news and filings · THG insider trades · Top funds