Assurant, Inc.
Assurant, Inc. (AIZ) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · AIZ · as of Sep 30, 2025
Ownership Breakdown
541
Institutional Holders
▼ 13 vs Q2
$10.17B
Total Inst. Value
▲ $685.78M vs Q2
49.55M
Shares Outstanding
freeFloat 99.22%
46.94M
13F Shares Held
▼ 1.14M vs Q2
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
AIZ largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
VANGUARD GROUP INC insurance carriers, nec | 6.64M | 12.98% | 12.98% | $1.44T | Nov 7, 2025 | ▼ 137.7K |
BANK OF NEW YORK MELLON CORP insurance carriers, nec | 5.01M | 9.80% | 9.80% | $1.09T | Nov 3, 2025 | ▲ 959.3K |
BLACKROCK, INC. insurance carriers, nec | 3.96M | 7.75% | 7.75% | $858.70B | Nov 12, 2025 | ▼ 18.1K |
T. ROWE PRICE INVESTMENT MANAGEMENT, INC. insurance carriers, nec | 3.86M | 7.55% | 7.55% | $836.19B | Nov 14, 2025 | ▼ 138.0K |
STATE STREET CORP insurance carriers, nec | 2.68M | 5.25% | 5.25% | $581.49B | Nov 14, 2025 | ▼ 108.0K |
GEODE CAPITAL MANAGEMENT, LLC insurance carriers, nec | 1.37M | 2.68% | 2.68% | $296.24B | Nov 12, 2025 | ▼ 25.3K |
PRICE T ROWE ASSOCIATES INC /MD/ insurance carriers, nec | 1.16M | 2.26% | 2.26% | $250.79B | Nov 14, 2025 | ▼ 90.6K |
INVESCO LTD. insurance carriers, nec | 1.12M | 2.19% | 2.19% | $242.38B | Nov 13, 2025 | ▼ 56.5K |
MASSACHUSETTS FINANCIAL SERVICES CO /MA/ insurance carriers, nec | 1.01M | 1.97% | 1.97% | $217.79B | Oct 29, 2025 | ▼ 239.5K |
FMR LLC insurance carriers, nec | 1.00M | 1.96% | 1.96% | $217.37B | Nov 13, 2025 | ▼ 80.2K |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2025 vs prior quarter
Q3 2025
24
Increased
+2.68M shares0
New Positions
first time holders26
Decreased
−2.10M shares0
Sold Out
fully exitedNet shares change (top 50)
+587.9K
+2.68M / −2.10M
Net new holders
-2
0 new / 0 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
AIZ insider trading · insider activity
Source: SEC Form 4
Insiders have been primarily selling shares recently. Selling may be driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment.
9
Buy transactions
6
Sell transactions
1.50
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
DiRienzo Dimitry SVP, CAO, Controller | May 26, 2026 | Sale | 2,000 | $255.68 | $511.4K | 2.7K | Form 4 ↗ |
Basu Rajiv director | May 22, 2026 | Award | 668 | — | — | 3.7K | Form 4 ↗ |
Blake Lynn S. director | May 22, 2026 | Award | 668 | — | — | 668 | Form 4 ↗ |
Carter J Braxton II director | May 22, 2026 | Award | 668 | — | — | 9.0K | Form 4 ↗ |
EDELMAN HARRIET director | May 22, 2026 | Award | 668 | — | — | 11.1K | Form 4 ↗ |
Granat Sari Beth director | May 22, 2026 | Award | 668 | — | — | 4.6K | Form 4 ↗ |
Redzic Ognjen director | May 22, 2026 | Award | 668 | — | — | 8.1K | Form 4 ↗ |
Reilly Paul J director | May 22, 2026 | Award | 668 | — | — | 22.2K | Form 4 ↗ |
ROSEN ELAINE director | May 22, 2026 | Award | 668 | — | — | 27.7K | Form 4 ↗ |
WARREN KEVIN M director | May 22, 2026 | Award | 668 | — | — | 2.3K | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
Assurant, Inc. (AIZ) is primarily owned by institutional investors, who hold approximately 94.8% of total shares outstanding. Company insiders own approximately 0.78%, while retail and public investors account for the remaining 4.48%.
The largest institutional shareholder of Assurant, Inc. is VANGUARD GROUP INC, holding approximately 6.64 million shares — equal to 12.98% of outstanding shares — as of September 30, 2025.
A total of 541 institutional investors currently hold AIZ stock, with a combined institutional value of approximately $10.17 billion as of the most recent 13F filing period.
Frequently asked questions
AIZ ownershipAssurant, Inc. (AIZ) is primarily owned by institutional investors, who hold approximately 94.8% of shares. The largest shareholder is VANGUARD GROUP INC with a 12.98% stake. Company insiders hold 0.78%. Data sourced from SEC Form 13F as of September 30, 2025.