William Blair & Company
RIVN icon

William Blair & Company’s Rivian RIVN Stock Holding History

William Blair & Company’s Portfolio RIVN Stock Details RIVN Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$415K Sell
23,933
-1,816
-7% -$28.3K ﹤0.01% 1289
2026
Q1 		$388K Sell
25,749
-3,587
-12% -$57.3K ﹤0.01% 1238
2025
Q4 		$578K Sell
29,336
-2,098
-7% -$33.3K ﹤0.01% 1090
2025
Q3 		$461K Sell
31,434
-13,642
-30% -$183K ﹤0.01% 1142
2025
Q2 		$619K Buy
45,076
+3,909
+9% +$53K ﹤0.01% 1029
2025
Q1 		$513K Buy
41,167
+930
+2% +$11.7K ﹤0.01% 1079
2024
Q4 		$535K Buy
40,237
+1,843
+5% +$21.2K ﹤0.01% 1080
2024
Q3 		$431K Buy
38,394
+5,460
+17% +$78.4K ﹤0.01% 1164
2024
Q2 		$442K Sell
32,934
-35,522
-52% -$371K ﹤0.01% 1127
2024
Q1 		$750K Sell
68,456
-295,863
-81% -$4.26M ﹤0.01% 967
2023
Q4 		$8.55M Sell
364,319
-59,825
-14% -$1.12M 0.03% 351
2023
Q3 		$10.3M Buy
424,144
+346,441
+446% +$8.09M 0.04% 298
2023
Q2 		$1.29M Sell
77,703
-1,125
-1% -$15.7K ﹤0.01% 764
2023
Q1 		$1.22M Buy
78,828
+67,771
+613% +$1.14M ﹤0.01% 783
2022
Q4 		$204K Sell
11,057
-2,744
-20% -$80.8K ﹤0.01% 1361
2022
Q3 		$454K Buy
13,801
+2,660
+24% +$90.7K ﹤0.01% 1076
2022
Q2 		$287K Sell
11,141
-1,724
-13% -$53.8K ﹤0.01% 1288
2022
Q1 		$646K Buy
12,865
+303
+2% +$18.4K ﹤0.01% 1068
2021
Q4 		$1.3M Buy
+12,562
New +$1.45M ﹤0.01% 866

Other funds holding RIVN

ACI
Amazon.com Inc Seattle, Washington $4.42B AUM 22.6% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Baillie Gifford & Co
Baillie Gifford & Co Edinburgh, United Kingdom $110B AUM 4.8% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return
SPC
Slate Path Capital New York $7.22B AUM 110.75% 1-Year Est. Return
D.E. Shaw & Co
D.E. Shaw & Co New York $210B AUM 57.28% 1-Year Est. Return
U
Uber San Francisco, California $4.51B AUM 1.92% 1-Year Est. Return

William Blair & Company's RIVN Position: Q2 2026 in Review

William Blair & Company reduced its Rivian (RIVN) stake by 7.1% in Q2 2026, selling an estimated $28.3K and leaving 23,933 shares worth $415K. The position accounts for ﹤0.01% of the portfolio, ranked #1289.

William Blair & Company first reported a position in RIVN in Q4 2021 and has held it in 19 quarters since. The position peaked at $10.3M in Q3 2023. 820 funds tracked by Wall St. Rank hold RIVN as of Q2 2026.

  • William Blair & Company held 23,933 shares of Rivian worth $415K as of Q2 2026.
  • William Blair & Company sold 1,816 Rivian shares in Q2 2026, an estimated $28.3K.
  • Rivian made up ﹤0.01% of William Blair & Company's portfolio in Q2 2026, its #1289 holding.
  • William Blair & Company first reported a position in Rivian in Q4 2021 and has held it in 19 quarters since.
  • William Blair & Company's Rivian position peaked at $10.3M in Q3 2023.
  • 820 funds tracked by Wall St. Rank held Rivian as of Q2 2026.

Based on William Blair & Company's 13F filing for Q2 2026, filed 11 Aug 2026.