THG · Hanover Insurance Group, Inc. · Holdings
Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.
Institutional Ownership Trend
Superinvestors Holding THG
All superinvestors →Holder Concentration
Across 549 13F filersWho Holds THG
Last 8 quarters through Sep 30, 2026 (filing window open)Each kind of 13F filer's share of the common shares 13F filers report. Holder type comes from regulatory records, never the filer's name; style, turnover and horizon are measured from each filer's own 13F book. The quarter selector does not change this card.
Jun 30, 2026, the newest closed quarter: 548 filers, like-for-like change +1.0%; actively managed books +2.5%; index-like books -2.1%.
| Holder type | Share | Filers | Change |
|---|---|---|---|
| Registered adviser | 53.7% | 308 | +3.7% |
| Exempt adviser | 1.0% | 3 | -37.7% |
| Adviser | 5.0% | 12 | -4.5% |
| Bank | 9.3% | 24 | -5.4% |
| Insurer | 1.8% | 3 | +53.0% |
| Broker-dealer | 0.1% | 1 | +38.1% |
| Benefit plan | 0.5% | 7 | +2.8% |
| Non-US | 1.9% | 10 | +10.8% |
| Holding company | 14.8% | 8 | -3.3% |
| Unknown | 11.8% | 172 | +2.2% |
| Style | Share | Filers | Change |
|---|---|---|---|
| Index-like | 32.0% | 48 | -2.1% |
| Systematic-like | 3.4% | 30 | -36.5% |
| Concentrated | 0.7% | 81 | -4.2% |
| Diversified active | 63.8% | 388 | +6.1% |
| Unknown | 0.0% | 1 | -25.7% |
| Not measured | 0.0% | 0 | — |
| Turnover | Share | Filers | Change |
|---|---|---|---|
| Low turnover | 59.2% | 347 | +4.1% |
| Medium turnover | 21.6% | 108 | +3.0% |
| High turnover | 4.5% | 47 | -29.6% |
| Unknown | 14.6% | 46 | -0.3% |
| Not measured | 0.0% | 0 | — |
| Holding horizon | Share | Filers | Change |
|---|---|---|---|
| Short horizon | 13.8% | 61 | -0.5% |
| Medium horizon | 13.2% | 84 | -4.0% |
| Long horizon | 68.5% | 375 | +3.5% |
| Unknown | 4.4% | 28 | -12.3% |
| Not measured | 0.0% | 0 | — |
| 13F book size | Share | Filers | Change |
|---|---|---|---|
| Under $1B | 0.7% | 143 | +18.0% |
| $1B to $10B | 5.3% | 174 | -7.5% |
| $10B to $100B | 20.3% | 154 | -4.5% |
| $100B or more | 73.7% | 77 | +3.3% |
| Not measured | 0.0% | 0 | — |
| Client base | Share | Filers | Change |
|---|---|---|---|
| Individuals and high net worth | 4.2% | 194 | +18.5% |
| Pooled investment vehicles | 3.0% | 31 | -35.2% |
| Registered funds and BDCs | 32.8% | 32 | +5.4% |
| Pension and profit sharing plans | 0.1% | 3 | +12.0% |
| Insurance companies | 0.3% | 5 | -1.4% |
| Charitable organizations | 0.0% | 1 | 0.0% |
| Governments and sovereign funds | 0.7% | 6 | 0.0% |
| Other investment advisers | 0.1% | 7 | +8.3% |
| Other | 0.1% | 2 | +79.3% |
| Diversified | 12.4% | 27 | +10.0% |
| Corporations | 0.0% | 0 | -100.0% |
| Unknown | 46.3% | 240 | -2.0% |
| Private funds | Share | Filers | Change |
|---|---|---|---|
| Hedge funds | 12.9% | 52 | -9.8% |
| Private equity funds | 0.6% | 20 | +25.1% |
| Venture capital funds | 0.0% | 1 | +289.1% |
| Real estate funds | 0.1% | 7 | +74.9% |
| Liquidity funds | 0.0% | 1 | -49.0% |
| Securitized asset funds | 0.4% | 2 | -1.7% |
| Other private funds | 12.0% | 32 | +21.2% |
| Mixed private funds | 3.1% | 3 | +6.9% |
| Private funds, type not stated | 3.1% | 8 | -2.0% |
| No private funds | 22.5% | 185 | +1.5% |
| Unknown | 45.3% | 237 | -0.7% |
| Location | Share | Filers | Change |
|---|---|---|---|
| United States | 93.9% | 485 | +2.1% |
| Outside the US | 6.1% | 63 | -16.2% |
The Sep 30, 2026 filing window is still open, so its bar carries the Jun 30, 2026 positions of filers that have not filed yet.
How the mix is measured
Shares are 13F common shares restated to today's split basis; options and principal amounts are left out. The change compares only filers with a 13F in both quarters and keeps each filer in its bucket of the later quarter on both sides; a filer that continues under a new CIK is compared through its successor. Holder type comes from each filer's current regulatory profile; client base and private funds come from the Form ADV roster current at each quarter end (rosters from December 2019, so an earlier quarter reads Unknown). Style, turnover, horizon and book size are measured from each filer's 13F book in the newest measured quarter, and Not measured means none was. Actively managed books are those measured systematic-like, concentrated or diversified active.
Excluded 6 holders with no observed 2026-03-31 13F and 4 holders with no observed 2026-06-30 13F. Compared across CIK changes: JANUS HENDERSON GROUP PLC continues as Jupiter Topco LLC.
Conviction and Crowding
548 13F filers, quarter ended Jun 30, 2026Measured across every 13F filer's common-share book once the quarter's filing window closed. Crowding counts filers with high turnover or that advise private funds on Form ADV.
Managers in the top fifth by current three-year FundScore alpha were net buyers of $0 (0 buying, 0 selling).
Estimated Holder Cost Basis
Quarter ended Jun 30, 2026, on that quarter's share basisEstimated, never filed: each 13F buy is costed at its quarter's average traded price and each sale keeps the average cost, so this is what holders paid on average if they traded evenly through each quarter.
Estimated cost covers 24.1% of the 13F shares; positions already held when a filer's 13F history starts, or bought in a quarter without a trusted average price, have no estimate.
Shared Holders
Companies THG's active holders also own, quarter ended Jun 30, 2026| # | Company | Shared holders |
|---|---|---|
| 1 | AXS Axis Capital Holdings Ltd | 7 |
| 2 | EG Everest Group, Ltd. | 8 |
| 3 | AIZ Assurant, Inc. | 6 |
| 4 | MCY Mercury General Corp | 4 |
| 5 | NXST Nexstar Media Group, Inc. | 6 |
| 6 | CCK Crown Holdings, Inc. | 7 |
| 7 | ACIW Aci Worldwide, Inc. | 4 |
| 8 | RNR Renaissancere Holdings Ltd | 6 |
| 9 | AFG American Financial Group Inc | 5 |
| 10 | CNO CNO Financial Group, Inc. | 3 |
Shareholder Targets
13F filers that own its peers but not THG, quarter ended Jun 30, 2026Found through its holder-overlap peers: AXS, EG, AIZ, MCY, NXST, CCK, ACIW, RNR, AFG, CNO, COLB, SLGN, SHOO, ALG, DRH, MATX, VOYA, JLL, AWI, INGR. 1,363 filers in all.
| # | Filer | In peers | Largest peers |
|---|---|---|---|
| 1 | WELLINGTON MANAGEMENT GROUP LLP Holding company, Diversified active | $1,104,565,420 8 held | COLB, VOYA, EG |
| 2 | STATE FARM MUTUAL AUTOMOBILE INSURANCE CO Insurer, Diversified active | $760,339,120 1 held | RNR |
| 3 | Swedbank AB Unknown, Diversified active | $652,336,368 5 held | CCK, JLL, AXS |
| 4 | EdgePoint Investment Group Inc. Registered adviser, Concentrated | $566,771,780 1 held | JLL |
| 5 | PZENA INVESTMENT MANAGEMENT LLC Registered adviser, Diversified active | $546,723,743 4 held | VOYA, CNO, COLB |
| 6 | Capital World Investors Adviser, Diversified active | $497,566,908 1 held | RNR |
| 7 | Capital International Investors Adviser, Diversified active | $492,579,547 2 held | RNR, AWI |
| 8 | FIL Ltd Non-US, Diversified active | $491,246,800 7 held | RNR, AIZ, JLL |
| 9 | COOKE & BIELER LP Registered adviser, Diversified active | $429,259,539 4 held | RNR, INGR, COLB |
| 10 | Balyasny Asset Management L.P. Registered adviser, Systematic-like | $423,636,030 14 held | AFG, EG, AWI |
Fund Ownership of THG by Fund Type
Registered funds' Form N-PORT reports for the quarter ended Jun 30, 2026Index funds and index ETFs hold 25.26% of shares outstanding.
| Fund type | Of shares outstanding | Shares |
|---|---|---|
| Index funds | 3.33% | 1,160,361 |
| Index ETFs | 21.93% | 7,634,918 |
| Active ETFs | 1.82% | 632,417 |
| Active funds | 18.73% | 6,522,159 |
| Unclassified | 3.47% | 1,207,804 |
| All registered funds | 49.28% | 17,157,659 |
How fund types are measured
Each fund series counts once, with its latest Form N-PORT report dated inside the quarter; only long share positions count, restated to today's split basis. The fund type is the series' latest Form N-CEN answer on or before the quarter end (the index-fund box and the exchange-traded flag), never its name. Unclassified funds have no usable N-CEN; unit investment trusts are among them, so index ownership is a floor. Funds sit inside their advisers' 13F reports, so these shares overlap the 13F figures and are never added to them.
| Holder | Value (USD) | % of 13F | Shares | Type | Filed | Open |
|---|---|---|---|---|---|---|
| Mega BlackRock, Inc. Holding company | $756,471,391 | 11.01% | 3,532,932 | Shares | 2026-08-07 | |
| Mega VANGUARD PORTFOLIO MANAGEMENT LLC Registered adviser | $411,030,747 | 5.98% | 1,919,628 | Shares | 2026-08-13 | |
| Mega PRICE T ROWE ASSOCIATES INC /MD/ Registered adviser | $392,177,695 | 5.71% | 1,831,579 | Shares | 2026-08-14 | |
| Mega STATE STREET CORP Bank | $348,377,522 | 5.07% | 1,627,020 | Shares | 2026-09-22 | |
| Mega VANGUARD CAPITAL MANAGEMENT LLC Registered adviser | $312,349,905 | 4.55% | 1,458,761 | Shares | 2026-08-13 | |
| Mega AQR CAPITAL MANAGEMENT LLC Registered adviser | $287,150,974 | 4.18% | 1,341,075 | Shares | 2026-08-14 | |
| Large FULLER & THALER ASSET MANAGEMENT, INC. Registered adviser | $233,327,634 | 3.40% | 1,089,705 | Shares | 2026-08-12 | |
| Mega AMERICAN CENTURY COMPANIES INC | $230,843,842 | 3.36% | 1,078,105 | Shares | 2026-08-12 | |
| Mega DIMENSIONAL FUND ADVISORS LP Registered adviser | $220,660,079 | 3.21% | 1,030,544 | Shares | 2026-08-11 | |
| Mega ALLIANCEBERNSTEIN L.P. Registered adviser | $194,662,915 | 2.83% | 909,130 | Shares | 2026-08-14 | |
| Mega FIRST TRUST ADVISORS LP Registered adviser | $176,489,908 | 2.57% | 824,257 | Shares | 2026-08-11 | |
| Mega GEODE CAPITAL MANAGEMENT, LLC Registered adviser | $156,112,964 | 2.27% | 729,091 | Shares | 2026-08-12 | |
| Mega AMERIPRISE FINANCIAL INC Adviser | $149,704,779 | 2.18% | 699,163 | Shares | 2026-08-14 | |
| Mega MASSACHUSETTS FINANCIAL SERVICES CO /MA/ Registered adviser | $127,539,934 | 1.86% | 595,647 | Shares | 2026-08-03 | |
| Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC Registered adviser | $97,062,522 | 1.41% | 453,309 | Shares | 2026-08-14 | |
| Mega Invesco Ltd. Adviser | $96,871,739 | 1.41% | 452,418 | Shares | 2026-08-14 | |
| Mega MORGAN STANLEY Holding company | $96,550,985 | 1.41% | 450,920 | Shares | 2026-08-13 | |
| Mega NORGES BANK Non-US | $95,767,739 | 1.39% | 447,262 | Shares | 2026-08-12 | |
| Large VAUGHAN NELSON INVESTMENT MANAGEMENT, L.P. Registered adviser | $79,762,695 | 1.16% | 372,514 | Shares | 2026-07-16 | |
| Large LONDON CO OF VIRGINIA Registered adviser | $77,254,710 | 1.12% | 360,801 | Shares | 2026-08-14 | |
| Mega NORTHERN TRUST CORP Bank | $73,236,746 | 1.07% | 342,036 | Shares | 2026-08-13 | |
| Large Allspring Global Investments Holdings, LLC Holding company | $71,413,301 | 1.04% | 333,520 | Shares | 2026-08-13 | |
| Mega GOLDMAN SACHS GROUP INC Holding company | $70,536,265 | 1.03% | 329,424 | Shares | 2026-08-14 | |
| Mega Bank of New York Mellon Corp Bank | $69,481,079 | 1.01% | 324,496 | Shares | 2026-08-06 | |
| Large Woodline Partners LP Registered adviser | $68,940,644 | 1.00% | 321,972 | Shares | 2026-08-14 | |
| Mega Qube Research & Technologies Ltd Exempt adviser | $66,545,284 | 0.97% | 310,785 | Shares | 2026-08-14 | |
| Large Quantinno Capital Management LP Registered adviser | $61,773,405 | 0.90% | 288,499 | Shares | 2026-08-13 | |
| Mega PRINCIPAL FINANCIAL GROUP INC Insurer | $60,963,817 | 0.89% | 284,718 | Shares | 2026-08-04 | |
| Large Markel Group Inc. Insurer | $60,167,720 | 0.88% | 281,000 | Shares | 2026-07-31 | |
| Large NOMURA ASSET MANAGEMENT INTERNATIONAL INC. Adviser | $58,398,660 | 0.85% | 272,738 | Shares | 2026-08-14 | |
| Mega BANK OF AMERICA CORP /DE/ Bank | $47,733,984 | 0.69% | 222,931 | Shares | 2026-08-14 | |
| Mega VANGUARD FIDUCIARY TRUST CO | $46,795,283 | 0.68% | 218,547 | Shares | 2026-08-13 | |
| Mega TWO SIGMA INVESTMENTS, LP Registered adviser | $38,716,536 | 0.56% | 180,817 | Shares | 2026-08-14 | |
| Mega PRIMECAP MANAGEMENT CO/CA/ Registered adviser | $37,843,568 | 0.55% | 176,740 | Shares | 2026-08-14 | |
| Large BROWN ADVISORY INC | $36,454,357 | 0.53% | 170,252 | Shares | 2026-08-14 | |
| Large WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC Registered adviser | $33,033,791 | 0.48% | 154,277 | Shares | 2026-08-12 | |
| Mid Arbejdsmarkedets Tillaegspension | $31,498,979 | 0.46% | 147,109 | Shares | 2026-07-17 | |
| Large ProShare Advisors LLC Registered adviser | $31,405,408 | 0.46% | 146,672 | Shares | 2026-08-11 | |
| Large Gotham Asset Management, LLC Registered adviser | $30,181,070 | 0.44% | 140,954 | Shares | 2026-08-14 | |
| Large Boston Trust Walden Corp | $29,587,101 | 0.43% | 138,180 | Shares | 2026-07-24 | |
| Large PUBLIC EMPLOYEES RETIREMENT ASSOCIATION OF COLORADO | $27,538,615 | 0.40% | 128,613 | Shares | 2026-08-11 | |
| Mid Interval Partners, LP | $26,734,166 | 0.39% | 124,856 | Shares | 2026-08-14 | |
| Mid ALTRINSIC GLOBAL ADVISORS LLC Registered adviser | $25,498,051 | 0.37% | 119,083 | Shares | 2026-08-14 | |
| Mega ENVESTNET ASSET MANAGEMENT INC Registered adviser | $24,936,415 | 0.36% | 116,460 | Shares | 2026-09-23 | |
| Mega JPMORGAN CHASE & CO Bank | $24,859,328 | 0.36% | 116,100 | Shares | 2026-08-12 | |
| Mega Allianz Asset Management GmbH | $24,510,958 | 0.36% | 114,473 | Shares | 2026-09-02 | |
| Mega UBS Group AG Bank | $23,588,315 | 0.34% | 110,164 | Shares | 2026-08-13 | |
| Mega UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC Registered adviser | $22,921,329 | 0.33% | 107,049 | Shares | 2026-08-13 | |
| Mega Jupiter Topco LLC | $21,531,264 | 0.31% | 100,557 | Shares | 2026-08-14 | |
| Mega RHUMBLINE ADVISERS Registered adviser | $21,260,188 | 0.31% | 99,291 | Shares | 2026-08-12 | |
| Large Aptus Capital Advisors, LLC Registered adviser | $19,546,372 | 0.28% | 91,287 | Shares | 2026-08-12 | |
| Mid Leeward Investments, LLC - MA Registered adviser | $19,299,492 | 0.28% | 90,134 | Shares | 2026-07-30 | |
| Mega T. Rowe Price Investment Management, Inc. Adviser | $18,638,075 | 0.27% | 87,045 | Shares | 2026-08-14 | |
| Mega SEI INVESTMENTS CO | $18,309,400 | 0.27% | 85,510 | Shares | 2026-08-14 | |
| Mega FRANKLIN RESOURCES INC Adviser | $18,098,062 | 0.26% | 84,523 | Shares | 2026-08-13 | |
| Mid MARTINGALE ASSET MANAGEMENT L P Registered adviser | $17,935,761 | 0.26% | 83,765 | Shares | 2026-08-13 | |
| Large NATIXIS ADVISORS, LLC Registered adviser | $17,815,425 | 0.26% | 83,203 | Shares | 2026-08-14 | |
| Mega RAYMOND JAMES FINANCIAL INC | $16,213,165 | 0.24% | 75,720 | Shares | 2026-08-14 | |
| Mega VOYA INVESTMENT MANAGEMENT LLC Registered adviser | $16,199,462 | 0.24% | 75,656 | Shares | 2026-08-12 | |
| Mid Gillson Capital LP Registered adviser | $15,668,873 | 0.23% | 73,178 | Shares | 2026-08-14 | |
| Mega FMR LLC Holding company | $15,614,272 | 0.23% | 72,923 | Shares | 2026-08-13 | |
| Mega California Public Employees Retirement System | $15,389,660 | 0.22% | 71,874 | Shares | 2026-08-14 | |
| Mega Swiss National Bank | $15,116,872 | 0.22% | 70,600 | Shares | 2026-08-11 | |
| Large RENAISSANCE TECHNOLOGIES LLC Registered adviser | $15,052,636 | 0.22% | 70,300 | Shares | 2026-08-13 | |
| Mega ARROWSTREET CAPITAL, LIMITED PARTNERSHIP Registered adviser | $14,756,079 | 0.21% | 68,915 | Shares | 2026-08-13 | |
| Large CONGRESS ASSET MANAGEMENT CO Registered adviser | $14,519,477 | 0.21% | 67,810 | Shares | 2026-10-06 | |
| Large SILVERCREST ASSET MANAGEMENT GROUP LLC Registered adviser | $12,101,205 | 0.18% | 56,516 | Shares | 2026-08-14 | |
| Mid HANCOCK WHITNEY CORP Bank | $11,961,385 | 0.17% | 55,863 | Shares | 2026-08-14 | |
| Mega WELLS FARGO & COMPANY/MN Bank | $11,715,574 | 0.17% | 54,715 | Shares | 2026-08-14 | |
| Large HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC Registered adviser | $11,649,198 | 0.17% | 54,405 | Shares | 2026-08-14 | |
| Mega BARCLAYS PLC Bank | $11,389,255 | 0.17% | 53,191 | Shares | 2026-08-14 | |
| Mid Hodges Capital Management Inc. Registered adviser | $11,213,250 | 0.16% | 52,369 | Shares | 2026-08-03 | |
| Large IEQ CAPITAL, LLC Registered adviser | $10,941,317 | 0.16% | 51,099 | Shares | 2026-08-11 | |
| Mega Russell Investments Group, Ltd. | $10,906,628 | 0.16% | 50,937 | Shares | 2026-08-06 | |
| Mega NORDEA INVESTMENT MANAGEMENT AB Non-US | $10,713,279 | 0.16% | 50,034 | Shares | 2026-08-05 | |
| Mega Creative Planning Registered adviser | $10,696,150 | 0.16% | 49,954 | Shares | 2026-08-13 | |
| Large Trexquant Investment LP Registered adviser | $10,596,584 | 0.15% | 49,489 | Shares | 2026-08-14 | |
| Large BNP PARIBAS ASSET MANAGEMENT Holding S.A. Non-US | $10,525,924 | 0.15% | 49,159 | Shares | 2026-08-13 | |
| Mega Legal & General Group Plc | $10,463,187 | 0.15% | 48,866 | Shares | 2026-08-14 | |
| Large PANAGORA ASSET MANAGEMENT INC Registered adviser | $10,034,733 | 0.15% | 46,865 | Shares | 2026-08-06 | |
| Large LSV ASSET MANAGEMENT Registered adviser | $9,849,520 | 0.14% | 46,000 | Shares | 2026-08-06 | |
| Mega Nuveen, LLC | $9,608,634 | 0.14% | 44,875 | Shares | 2026-08-11 | |
| Large STRS OHIO Benefit plan | $9,548,253 | 0.14% | 44,593 | Shares | 2026-07-30 | |
| Mid SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC | $9,251,696 | 0.13% | 43,208 | Shares | 2026-08-14 | |
| Mid CRAWFORD INVESTMENT COUNSEL INC Registered adviser | $9,051,708 | 0.13% | 42,274 | Shares | 2026-08-14 | |
| Mega CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM Benefit plan | $9,034,151 | 0.13% | 42,192 | Shares | 2026-08-24 | |
| Mid Vest Financial, LLC Registered adviser | $8,599,059 | 0.13% | 40,160 | Shares | 2026-07-24 | |
| Large ACADIAN ASSET MANAGEMENT LLC | $8,546,813 | 0.12% | 39,916 | Shares | 2026-08-13 | |
| Large Universal- Beteiligungs- und Servicegesellschaft mbH | $8,546,385 | 0.12% | 39,914 | Shares | 2026-08-06 | |
| Large Cerity Partners LLC Registered adviser | $8,541,673 | 0.12% | 39,892 | Shares | 2026-08-14 | |
| Large TEACHER RETIREMENT SYSTEM OF TEXAS Benefit plan | $8,348,967 | 0.12% | 38,992 | Shares | 2026-08-14 | |
| Large NEW YORK STATE TEACHERS RETIREMENT SYSTEM | $8,096,519 | 0.12% | 37,813 | Shares | 2026-07-23 | |
| Large Robeco Institutional Asset Management B.V. | $8,081,745 | 0.12% | 37,744 | Shares | 2026-10-20 | |
| Mid HEARTLAND ADVISORS INC Registered adviser | $8,039,991 | 0.12% | 37,549 | Shares | 2026-08-11 | |
| Large Retirement Systems of Alabama | $7,748,360 | 0.11% | 36,187 | Shares | 2026-07-28 | |
| Mega SCHRODER INVESTMENT MANAGEMENT GROUP Registered adviser | $7,570,640 | 0.11% | 35,357 | Shares | 2026-08-13 | |
| Large Point72 Asset Management, L.P. Registered adviser | $7,396,347 | 0.11% | 34,543 | Shares | 2026-08-14 | |
| Mega VANGUARD ASSET MANAGEMENT, Ltd | $7,072,811 | 0.10% | 33,032 | Shares | 2026-08-13 | |
| Mid TRILLIUM ASSET MANAGEMENT, LLC Registered adviser | $6,894,235 | 0.10% | 32,198 | Shares | 2026-08-11 | |
| Mid ALGERT GLOBAL LLC Registered adviser | $6,824,004 | 0.10% | 31,870 | Shares | 2026-08-13 |
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