William Blair & Company
AIZ icon

William Blair & Company’s Assurant AIZ Stock Holding History

William Blair & Company’s Portfolio AIZ Stock Details AIZ Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$512K Sell
2,350
-346
-13% -$78.9K ﹤0.01% 1145
2025
Q4 		$649K Sell
2,696
-530
-16% -$118K ﹤0.01% 1055
2025
Q3 		$699K Sell
3,226
-425
-12% -$86.2K ﹤0.01% 1009
2025
Q2 		$721K Sell
3,651
-503
-12% -$98.8K ﹤0.01% 983
2025
Q1 		$871K Sell
4,154
-33
-0.8% -$6.89K ﹤0.01% 921
2024
Q4 		$893K Sell
4,187
-120
-3% -$25K ﹤0.01% 933
2024
Q3 		$856K Sell
4,307
-13
-0.3% -$2.37K ﹤0.01% 947
2024
Q2 		$718K Sell
4,320
-12,977
-75% -$2.25M ﹤0.01% 979
2024
Q1 		$3.26M Buy
17,297
+100
+0.6% +$17.4K 0.01% 571
2023
Q4 		$2.9M Sell
17,197
-2,081
-11% -$331K 0.01% 583
2023
Q3 		$2.77M Sell
19,278
-5,636
-23% -$772K 0.01% 584
2023
Q2 		$3.13M Sell
24,914
-293
-1% -$36.5K 0.01% 555
2023
Q1 		$3.03M Sell
25,207
-5,532
-18% -$692K 0.01% 558
2022
Q4 		$3.84M Sell
30,739
-105,595
-77% -$14.1M 0.02% 482
2022
Q3 		$19.8M Buy
136,334
+1,310
+1% +$214K 0.09% 186
2022
Q2 		$23.3M Buy
135,024
+121,220
+878% +$22M 0.1% 175
2022
Q1 		$2.51M Sell
13,804
-16,302
-54% -$2.67M 0.01% 639
2021
Q4 		$4.69M Buy
30,106
+10,017
+50% +$1.59M 0.01% 489
2021
Q3 		$3.17M Buy
+20,089
New +$3.24M 0.01% 575

Other funds holding AIZ

Bank of New York Mellon
Bank of New York Mellon New York $544B AUM 28.31% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $145B AUM 22.78% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $865B AUM 30.76% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return

William Blair & Company's AIZ Position: Q1 2026 in Review

William Blair & Company reduced its Assurant (AIZ) stake by 13% in Q1 2026, selling an estimated $78.9K and leaving 2,350 shares worth $512K. The position accounts for ﹤0.01% of the portfolio, ranked #1145.

William Blair & Company first reported a position in AIZ in Q3 2021 and has held it in 19 quarters since. The position peaked at $23.3M in Q2 2022. 579 funds tracked by Wall St. Rank hold AIZ as of Q1 2026.

  • William Blair & Company held 2,350 shares of Assurant worth $512K as of Q1 2026.
  • William Blair & Company sold 346 Assurant shares in Q1 2026, an estimated $78.9K.
  • Assurant made up ﹤0.01% of William Blair & Company's portfolio in Q1 2026, its #1145 holding.
  • William Blair & Company first reported a position in Assurant in Q3 2021 and has held it in 19 quarters since.
  • William Blair & Company's Assurant position peaked at $23.3M in Q2 2022.
  • 579 funds tracked by Wall St. Rank held Assurant as of Q1 2026.

Based on William Blair & Company's 13F filing for Q1 2026, filed 8 May 2026.