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THG · Hanover Insurance Group, Inc.

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Market Cap
$7.94B
Shares
34.82M

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.

Holders: 547
Total Value: $6,875,695,368
Total Shares: 32,111,413
Showing 1–100 of 551 holdings by value · page 1 of 6

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 547 13F filers · Δ vs Mar 31, 2026
Top Holder
11.0%
Sep 2023 → Jun 2026 · range 11.0% – 12.0%
−0.7 pts
Top 5
32.3%
Sep 2023 → Jun 2026 · range 29.3% – 36.2%
+0.1 pts
Top 10
49.3%
Sep 2023 → Jun 2026 · range 46.1% – 51.0%
+1.8 pts
HHI
340
Sep 2023 → Jun 2026 · range 340 – 409
Broadly held+0

Quarterly Activity

vs Mar 31, 2026
New
82
Increased
211
Decreased
168
Sold Out
45
Unchanged
86
Holder count: +37
Institutional value: +26.5%
Shares held: +2.5%

Top Buyers

vs Mar 31, 2026
Institution Added Now Holds Open

Top Sellers

vs Mar 31, 2026
Institution Sold Now Holds Open

Top New Positions

vs Mar 31, 2026
Institution Acquired Value (USD) Open

Top Sold-Out Positions

vs Mar 31, 2026
Institution Previously Held Last Value (USD) Open
Showing 100 of 551
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 944695 CUSIP 410867105 13F (30d) 374 filings 355 filers Visit website Investor relations