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AIZ

Assurant, Inc.

Company with tickers: AIZ, AIZN

CIK
1267238
CUSIP
04621X108
Shares Outstanding
49,547,637
13F Activity (30d)
322 filings 313 filers

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: 578
Total Value: $10,252,541,034
Total Shares: 47,071,032
Showing 1–100 of 587 holdings by value · page 1 of 6

Institutional Ownership Trend

25 quarters

Holder Concentration

Across 578 13F filers · Δ vs Dec 31, 2025
Top Holder
10.2%
Jun 2023 → Mar 2026 · range 10.2% – 14.1%
−3.6 pts
Top 5
38.8%
Jun 2023 → Mar 2026 · range 38.8% – 48.5%
−6.7 pts
Top 10
54.6%
Jun 2023 → Mar 2026 · range 54.6% – 64.6%
−3.0 pts
HHI
403
Jun 2023 → Mar 2026 · range 403 – 607
Broadly held −114

Quarterly Activity

vs Dec 31, 2025
New
86
Increased
202
Decreased
196
Sold Out
71
Unchanged
94
Holder count: +15
Institutional value: -11.3%
Shares held: -1.9%

Top Buyers

vs Dec 31, 2025
Institution Added Now Holds Open

Top Sellers

vs Dec 31, 2025
Institution Sold Now Holds Open

Top New Positions

vs Dec 31, 2025
Institution Acquired Value (USD) Open

Top Sold-Out Positions

vs Dec 31, 2025
Institution Previously Held Last Value (USD) Open
Showing 100 of 587
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Holder Value (USD) % of 13F Shares Open