William Blair & Company
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William Blair & Company’s Chubb CB Stock Holding History

William Blair & Company’s Portfolio CB Stock Details CB Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$15.8M Sell
48,584
-1,149
-2% -$369K 0.05% 277
2025
Q4 		$15.5M Buy
49,733
+993
+2% +$290K 0.04% 277
2025
Q3 		$13.8M Sell
48,740
-3,138
-6% -$864K 0.04% 292
2025
Q2 		$15M Buy
51,878
+770
+2% +$222K 0.04% 277
2025
Q1 		$15.4M Sell
51,108
-7,058
-12% -$1.96M 0.05% 249
2024
Q4 		$16.1M Buy
58,166
+4,095
+8% +$1.16M 0.05% 257
2024
Q3 		$15.6M Sell
54,071
-1,505
-3% -$413K 0.05% 272
2024
Q2 		$14.2M Buy
55,576
+19,268
+53% +$4.95M 0.04% 275
2024
Q1 		$9.41M Sell
36,308
-6
-0% -$1.48K 0.03% 341
2023
Q4 		$8.21M Buy
36,314
+1,319
+4% +$288K 0.03% 355
2023
Q3 		$7.29M Sell
34,995
-3,243
-8% -$656K 0.03% 360
2023
Q2 		$7.36M Sell
38,238
-5,738
-13% -$1.12M 0.03% 367
2023
Q1 		$8.54M Buy
43,976
+218
+0.5% +$45.8K 0.03% 329
2022
Q4 		$9.65M Buy
43,758
+1,140
+3% +$237K 0.04% 301
2022
Q3 		$7.75M Sell
42,618
-669
-2% -$127K 0.04% 327
2022
Q2 		$8.51M Sell
43,287
-554
-1% -$114K 0.04% 319
2022
Q1 		$9.38M Sell
43,841
-359
-0.8% -$73K 0.03% 340
2021
Q4 		$8.54M Buy
44,200
+6,324
+17% +$1.19M 0.03% 373
2021
Q3 		$6.57M Sell
37,876
-294
-0.8% -$51.5K 0.02% 403
2021
Q2 		$6.07M Sell
38,170
-4,931
-11% -$817K 0.02% 421
2021
Q1 		$6.81M Sell
43,101
-2,724
-6% -$439K 0.03% 396
2020
Q4 		$7.05M Sell
45,825
-3,683
-7% -$516K 0.03% 373
2020
Q3 		$5.75M Buy
49,508
+9,511
+24% +$1.19M 0.02% 370
2020
Q2 		$5.06M Sell
39,997
-6,748
-14% -$782K 0.02% 376
2020
Q1 		$5.22M Sell
46,745
-4,081
-8% -$585K 0.03% 322
2019
Q4 		$7.91M Sell
50,826
-12,119
-19% -$1.85M 0.04% 300
2019
Q3 		$10.2M Sell
62,945
-196
-0.3% -$30.3K 0.06% 257
2019
Q2 		$9.3M Sell
63,141
-4,295
-6% -$620K 0.05% 271
2019
Q1 		$9.45M Sell
67,436
-11,601
-15% -$1.54M 0.06% 270
2018
Q4 		$10.2M Sell
79,037
-12,711
-14% -$1.64M 0.07% 235
2018
Q3 		$12.3M Sell
91,748
-4,930
-5% -$667K 0.08% 224
2018
Q2 		$12.3M Sell
96,678
-2,206
-2% -$293K 0.08% 221
2018
Q1 		$13.5M Buy
98,884
+258
+0.3% +$37.4K 0.1% 199
2017
Q4 		$14.4M Buy
98,626
+65,347
+196% +$9.76M 0.1% 207
2017
Q3 		$4.74M Sell
33,279
-61,932
-65% -$8.96M 0.04% 352
2017
Q2 		$13.8M Buy
95,211
+11,450
+14% +$1.61M 0.1% 206
2017
Q1 		$11.5M Buy
83,761
+7,506
+10% +$1.01M 0.09% 211
2016
Q4 		$10.1M Sell
76,255
-23,212
-23% -$2.96M 0.09% 214
2016
Q3 		$12.5M Buy
99,467
+266
+0.3% +$33.8K 0.11% 193
2016
Q2 		$13M Buy
99,201
+62,446
+170% +$7.7M 0.12% 184
2016
Q1 		$4.38M Buy
36,755
+19,017
+107% +$2.19M 0.04% 304
2015
Q4 		$2.07M Buy
+17,738
New +$2.01M 0.02% 461

Other funds holding CB

Berkshire Hathaway
Berkshire Hathaway Omaha, Nebraska $263B AUM 16.68% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $865B AUM 30.76% 1-Year Est. Return
GQG Partners
GQG Partners Ft. Lauderdale, Florida $63.1B AUM 23.07% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
Massachusetts Financial Services
Massachusetts Financial Services Boston, Massachusetts $298B AUM 21.96% 1-Year Est. Return

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

William Blair & Company reduced its Chubb (CB) stake by 2.3% in Q1 2026, selling an estimated $369K and leaving 48,584 shares worth $15.8M. The position accounts for 0.05% of the portfolio, ranked #277.

William Blair & Company first reported a position in CB in Q4 2015 and has held it in 42 quarters since. The position peaked at $16.1M in Q4 2024. 2,104 funds tracked by Wall St. Rank hold CB as of Q1 2026.

  • William Blair & Company held 48,584 shares of Chubb worth $15.8M as of Q1 2026.
  • William Blair & Company sold 1,149 Chubb shares in Q1 2026, an estimated $369K.
  • Chubb made up 0.05% of William Blair & Company's portfolio in Q1 2026, its #277 holding.
  • William Blair & Company first reported a position in Chubb in Q4 2015 and has held it in 42 quarters since.
  • William Blair & Company's Chubb position peaked at $16.1M in Q4 2024.
  • 2,104 funds tracked by Wall St. Rank held Chubb as of Q1 2026.

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