The Hanover Insurance Group, Inc.
US ˙ NYSE ˙ US4108671052

SecurityTHG / The Hanover Insurance Group, Inc.
InstitutionAlliancebernstein L.p.
Latest Disclosed Ownership831,545 shares
Latest Disclosed Value $ 151,981,480
Alliancebernstein L.p. reports 22.79% decrease in ownership of THG / The Hanover Insurance Group, Inc.

On May 15, 2026 - Alliancebernstein L.p. filed a 13F-HR form disclosing ownership of 831,545 shares of The Hanover Insurance Group, Inc. (US:THG) valued at $144,148,326 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 1,077,036 shares of The Hanover Insurance Group, Inc.. This represents a change in shares of -22.79% during the quarter. The current value of the position is $154,958,411 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F HANOVER INS GROUP COM 410867105 831,545 -245,491 -22.79 151,981 -22.79 0.0492
2026-02-17 2025-12-31 13F HANOVER INS GROUP COM 410867105 1,077,036 -185,683 -14.71 196,850 -14.17 0.0622
2025-11-14 2025-09-30 13F HANOVER INS GROUP COM 410867105 1,262,719 -17,699 -1.38 229,348 5.44 0.0722
2025-08-14 2025-06-30 13F HANOVER INS GROUP COM 410867105 1,280,418 339,896 36.14 217,505 32.95 0.0709
2025-05-15 2025-03-31 13F HANOVER INS GROUP COM 410867105 940,522 80,262 9.33 163,604 22.97 0.0592
2025-02-12 2024-12-31 13F HANOVER INS GROUP COM 410867105 860,260 19,956 2.37 133,048 6.90 0.0452
2024-11-14 2024-09-30 13F HANOVER INS GROUP COM 410867105 840,304 177,271 26.74 124,457 49.64 0.0418
2024-08-14 2024-06-30 13F HANOVER INS GROUP COM 410867105 663,033 85,602 14.82 83,171 5.78 0.0290
2024-05-14 2024-03-31 13F HANOVER INS GROUP COM 410867105 577,431 -25,054 -4.16 78,629 7.48 0.0278
2024-02-14 2023-12-31 13F HANOVER INS GROUP COM 410867105 602,485 -242,957 -28.74 73,154 -22.03 0.0281
2023-11-14 2023-09-30 13F HANOVER INS GROUP COM 410867105 845,442 -89,038 -9.53 93,827 -11.17 0.0399
2023-08-15 2023-06-30 13F HANOVER INS GROUP COM 410867105 934,480 -19,269 -2.02 105,624 -13.82 0.0431
2023-05-15 2023-03-31 13F HANOVER INS GROUP COM 410867105 953,749 -33,534 -3.40 122,557 -8.14 0.0525
2023-02-15 2022-12-31 13F HANOVER INS GROUP COM 410867105 987,283 -41,819 -4.06 133,412 1.17 0.0600
2022-11-15 2022-09-30 13F HANOVER INS GROUP COM 410867105 1,029,102 91,418 9.75 131,869 -3.84 0.0638
2022-08-15 2022-06-30 13F HANOVER INS GROUP COM 410867105 937,684 -126,726 -11.91 137,136 -13.83 0.0626
2022-05-13 2022-03-31 13F HANOVER INS GROUP COM 410867105 1,064,410 -16,524 -1.53 159,151 12.34 0.0614
2022-02-14 2021-12-31 13F HANOVER INS GROUP COM 410867105 1,080,934 -30,821 -2.77 141,667 -1.69 0.0501
2021-11-10 2021-09-30 13F HANOVER INS GROUP COM 410867105 1,111,755 160,807 16.91 144,106 11.72 0.0569
2021-07-30 2021-06-30 13F HANOVER INS GROUP COM 410867105 950,948 -10,423 -1.08 128,987 3.64 0.0518
2021-05-06 2021-03-31 13F HANOVER INS GROUP COM 410867105 961,371 -13,626 -1.40 124,459 9.18 0.0546
2021-02-08 2020-12-31 13F HANOVER INS GROUP COM 410867105 974,997 14,838 1.55 113,997 27.42 0.0538
2020-11-12 2020-09-30 13F HANOVER INS GROUP COM 410867105 960,159 70,347 7.91 89,468 -0.77 0.0482
2020-08-13 2020-06-30 13F HANOVER INS GROUP COM 410867105 889,812 408,182 84.75 90,165 106.68 0.0530
2020-05-14 2020-03-31 13F HANOVER INS GROUP COM 410867105 481,630 516 0.11 43,626 -33.65 0.0313
2020-02-18 2019-12-31 13F HANOVER INS GROUP COM 410867105 481,114 1,753 0.37 65,754 1.20 0.0374
2019-11-14 2019-09-30 13F HANOVER INS GROUP COM 410867105 479,361 13,127 2.82 64,973 8.62 0.0405
2019-08-14 2019-06-30 13F HANOVER INS GROUP COM 410867105 466,234 14,893 3.30 59,818 16.08 0.0372
2019-05-14 2019-03-31 13F HANOVER INS GROUP COM 410867105 451,341 11,675 2.66 51,530 0.37 0.0335
2019-02-13 2018-12-31 13F HANOVER INS GROUP COM 410867105 439,666 37,542 9.34 51,340 3.49 0.0381
2018-11-08 2018-09-30 13F HANOVER INS GROUP COM 410867105 402,124 -3,103 -0.77 49,610 2.40 0.0324
2018-08-13 2018-06-30 13F HANOVER INS GROUP COM 410867105 405,227 40,186 11.01 48,449 12.58 0.0337
2018-05-14 2018-03-31 13F HANOVER INS GROUP COM 410867105 365,041 -1,840 -0.50 43,035 8.53 0.0311
2018-02-13 2017-12-31 13F HANOVER INS GROUP COM 410867105 366,881 3,782 1.04 39,652 12.66 0.0284
2017-11-13 2017-09-30 13F HANOVER INS GROUP COM 410867105 363,099 -24,797 -6.39 35,195 2.37 0.0264
2017-08-10 2017-06-30 13F HANOVER INS GROUP COM 410867105 387,896 -24,401 -5.92 34,379 -7.41 0.0266
2017-05-11 2017-03-31 13F HANOVER INS GROUP COM 410867105 412,297 12,727 3.19 37,131 2.11 0.0296
2017-02-13 2016-12-31 13F HANOVER INS GROUP COM 410867105 399,570 -285,250 -41.65 36,365 -29.59 0.0303
2016-11-10 2016-09-30 13F HANOVER INS GROUP COM 410867105 684,820 -170,922 -19.97 51,649 -28.67 0.0436
2016-08-11 2016-06-30 13F HANOVER INS GROUP COM 410867105 855,742 -119,264 -12.23 72,413 -17.68 0.0624
2016-05-13 2016-03-31 13F HANOVER INS GROUP COM 410867105 975,006 -17,992 -1.81 87,965 8.91 0.0748
2016-02-16 2015-12-31 13F/A-1 HANOVER INS GROUP COM 410867105 992,998 -320,582 -24.41 80,770 -20.86 0.0687
2016-02-12 2015-12-31 13F HANOVER INS GROUP COM 410867105 992,998 77,156
2015-11-13 2015-09-30 13F HANOVER INS GROUP COM 410867105 1,313,580 -189,695 -12.62 102,065 -8.29 0.0876
2015-08-14 2015-06-30 13F HANOVER INS GROUP COM 410867105 1,503,275 15,557 1.05 111,287 3.06 0.0919
2015-05-13 2015-03-31 13F HANOVER INSURANCE GROUP COM 410867105 1,487,718 27,017 1.85 107,979 3.65 0.0875
2015-02-13 2014-12-31 13F HANOVER INSURANCE GROUP COM 410867105 1,460,701 1,378,646 1,680.15 104,177 1,967.00 0.0865
2014-11-13 2014-09-30 13F HANOVER INSURANCE GROUP COM 410867105 82,055 46,280 129.36 5,040 123.11 0.0042
2014-08-13 2014-06-30 13F HANOVER INSURANCE GROUP COM 410867105 35,775 1,961 5.80 2,259 8.71 0.0019
2014-05-13 2014-03-31 13F HANOVER INSURANCE GROUP COM 410867105 33,814 -1,506 -4.26 2,078 -1.47 0.0018
2014-02-13 2013-12-31 13F HANOVER INSURANCE GROUP COM 410867105 35,320 -2,099 -5.61 2,109 1.88 0.0019
2013-11-14 2013-09-30 13F HANOVER INSURANCE GROUP COM 410867105 37,419 5,474 17.14 2,070 32.44 0.0020
2013-08-13 2013-06-30 13F HANOVER INSURANCE GROUP COM 410867105 31,945 31,945 1,563 0.0017
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.