13F reference period
Q2 2026
Security Snapshot
HANOVER INSURANCE GROUP, INC. - COMMON STOCK (THG) Institutional Ownership
CUSIP: 410867105
13F Institutional Holders and Ownership History from Q1 2014 to Q3 2026
Institutions Reporting
547
Shares (Excl. Options)
32,102,041
Price
$214.12
The headline uses the Q2 2026 reference period after its reporting deadline. Available reports may still be incomplete or amended. Newer periods in the history table contain incoming reports and may be incomplete.
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- Security type / class
- Equity / COMMON STOCK
- Symbol
- THG on NYSE
- All holders as of 30 Jun 2026
- Q2 2026
- Total 13F shares
- 32,102,041
- Total 13F value
- $6,837,585,073
- Portfolio coverage rank
- 0%
- Share change
- +793,224
- Value change
- +$193,978,582
- Number of holders
- 547
- Shares outstanding
- 35,222,769
- SEC-reported price per share
- $214.12
- Insider filing price
- $214.12
Latest holder snapshot
5 signals
Issuer context
Names, identifiers, and filing context for this profile.
3 identity fields
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Filing notes and source
Key facts
- THG - HANOVER INSURANCE GROUP, INC. - COMMON STOCK is tracked under CUSIP 410867105.
- 547 institutions reported positions in Q2 2026.
- 1 significant owner is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 506 to 547 between Q1 2026 and Q2 2026.
- SEC-reported value moved from $5,439,959,696 to $6,837,585,073.
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC evidence
Latest holder context comes from 547 institutions filings for Q2 2026.
Security key
410867105
13F reference period
Q2 2026
13F holders
547
13D/G owners
1
CIK / CUSIP context first
Open Q2 2026 holders
THG full holder history
HANOVER INSURANCE GROUP, INC. SEC filings
HANOVER INSURANCE GROUP, INC. company facts
HANOVER INSURANCE GROUP, INC. insider transactions
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 410867105:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
1
Security
THG
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| PRICE T ROWE ASSOCIATES INC /MD/ | 5.2% | $392,178,766 | 1,831,584 | T. Rowe Price Associates, Inc. | 30 Jun 2026 |
As of 30 Jun 2026, 547 institutional investors reported holding 32,102,041 shares of HANOVER INSURANCE GROUP, INC. - COMMON STOCK (THG). This represents 91% of the company’s total 35,222,769 outstanding shares.
13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
65%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| BlackRock, Inc. | 10% | 3,532,932 | -4% | 0.01% | $756,471,461 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 5.4% | 1,919,628 | -0.66% | 0.02% | $411,030,747 |
| PRICE T ROWE ASSOCIATES INC /MD/ | 5.2% | 1,831,579 | +32% | 0.04% | $392,179,000 |
| STATE STREET CORP | 4.6% | 1,627,020 | -0.27% | 0.01% | $348,377,522 |
| VANGUARD CAPITAL MANAGEMENT LLC | 4.1% | 1,458,761 | +0.44% | 0.01% | $312,349,905 |
| AQR CAPITAL MANAGEMENT LLC | 3.8% | 1,341,075 | +32% | 0.1% | $287,151,055 |
| FULLER & THALER ASSET MANAGEMENT, INC. | 3.1% | 1,089,705 | +10% | 0.64% | $233,327,577 |
| AMERICAN CENTURY COMPANIES INC | 3.1% | 1,078,105 | +7.5% | 0.1% | $230,844,336 |
| DIMENSIONAL FUND ADVISORS LP | 2.9% | 1,030,544 | +6.2% | 0.04% | $220,662,316 |
| ALLIANCEBERNSTEIN L.P. | 2.6% | 909,130 | +9.3% | 0.06% | $157,597,686 |
| FIRST TRUST ADVISORS LP | 2.3% | 824,257 | -0.37% | 0.1% | $176,489,894 |
| GEODE CAPITAL MANAGEMENT, LLC | 2.1% | 729,091 | +0.13% | 0.01% | $156,147,550 |
| AMERIPRISE FINANCIAL INC | 2% | 699,163 | +0.63% | 0.03% | $149,705,058 |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | 1.7% | 595,647 | -0.52% | 0.04% | $127,539,936 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 1.3% | 453,309 | -3.7% | 0.01% | $97,062,523 |
| Invesco Ltd. | 1.3% | 452,418 | -0.1% | 0.01% | $96,871,743 |
| MORGAN STANLEY | 1.3% | 450,920 | -2.5% | 0.01% | $96,551,448 |
| NORGES BANK | 1.3% | 447,262 | 0.01% | $95,767,739 | |
| VAUGHAN NELSON INVESTMENT MANAGEMENT, L.P. | 1.1% | 372,514 | +126% | 0.71% | $79,762,698 |
| LONDON CO OF VIRGINIA | 1% | 360,801 | -5.5% | 0.44% | $77,257,243 |
| NORTHERN TRUST CORP | 0.97% | 342,036 | -0.04% | 0.01% | $73,236,748 |
| Allspring Global Investments Holdings, LLC | 0.95% | 333,520 | -17% | 0.11% | $72,293,796 |
| GOLDMAN SACHS GROUP INC | 0.94% | 329,424 | +51% | 0.01% | $70,536,251 |
| Bank of New York Mellon Corp | 0.92% | 324,496 | -4.2% | 0.01% | $69,481,152 |
| Woodline Partners LP | 0.91% | 321,972 | -23% | 0.21% | $68,940,645 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
51
Headline period
Q2 2026
Rows shown
1-25 of 51
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q3 | 430,102 | $91,807,956 | -$9,496,340 | $214.12 | 87 |
| 2026 Q2 | 32,102,041 | $6,837,585,073 | +$193,978,582 | $214.12 | 547 |
| 2026 Q1 | 31,333,794 | $5,439,959,696 | -$78,764,590 | $173.35 | 506 |
| 2025 Q4 | 31,768,400 | $5,804,361,698 | -$19,715,768 | $182.77 | 494 |
| 2025 Q3 | 31,373,807 | $5,697,505,767 | -$154,915,403 | $181.63 | 457 |
| 2025 Q2 | 32,290,410 | $5,482,385,738 | +$84,915,212 | $169.87 | 430 |
| 2025 Q1 | 31,788,089 | $5,528,881,931 | +$27,327,059 | $173.95 | 433 |
| 2024 Q4 | 31,715,857 | $4,902,908,948 | +$45,827,612 | $154.66 | 404 |
| 2024 Q3 | 31,354,358 | $4,643,018,855 | -$3,770,078 | $148.11 | 373 |
| 2024 Q2 | 31,490,861 | $3,950,251,977 | +$15,488,111 | $125.44 | 369 |
| 2024 Q1 | 31,366,153 | $4,270,581,566 | +$37,180,334 | $136.17 | 346 |
| 2023 Q4 | 31,071,059 | $3,773,896,047 | -$35,671,829 | $121.42 | 340 |
| 2023 Q3 | 31,372,231 | $3,483,134,350 | +$61,164,852 | $110.98 | 332 |
| 2023 Q2 | 30,731,438 | $3,474,572,879 | -$27,177,254 | $113.03 | 335 |
| 2023 Q1 | 30,873,221 | $3,966,637,920 | -$8,833,012 | $128.50 | 346 |
| 2022 Q4 | 31,055,460 | $4,196,345,581 | -$20,154,930 | $135.13 | 350 |
| 2022 Q3 | 31,208,177 | $4,000,615,520 | -$89,579,608 | $128.14 | 324 |
| 2022 Q2 | 30,649,135 | $4,480,459,735 | +$99,471,304 | $146.25 | 348 |
| 2022 Q1 | 30,262,489 | $4,525,023,000 | -$10,691,313 | $149.52 | 350 |
| 2021 Q4 | 30,130,965 | $3,949,094,244 | -$110,840,088 | $131.06 | 343 |
| 2021 Q3 | 30,153,751 | $3,909,358,532 | -$77,289,791 | $129.62 | 317 |
| 2021 Q2 | 30,710,809 | $4,165,643,804 | -$53,926,063 | $135.64 | 322 |
| 2021 Q1 | 31,163,486 | $4,035,068,199 | -$13,883,664 | $129.46 | 343 |
| 2020 Q4 | 31,145,864 | $3,641,371,045 | -$79,422,363 | $116.92 | 322 |
| 2020 Q3 | 31,990,602 | $2,978,037,301 | -$68,537,035 | $93.18 | 331 |