William Blair Investment Management
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William Blair Investment Management’s StepStone Group STEP Stock Holding History

William Blair Investment Management’s Portfolio STEP Stock Details STEP Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$79.8M Buy
1,930,015
+15,538
+0.8% +$769K 0.24% 119
2026
Q1 		$91.4M Buy
1,914,477
+1,244,285
+186% +$71.9M 0.3% 95
2025
Q4 		$43M Buy
670,192
+46,273
+7% +$2.93M 0.12% 151
2025
Q3 		$40.7M Buy
623,919
+88,794
+17% +$5.42M 0.11% 159
2025
Q2 		$29.7M Buy
535,125
+22,871
+4% +$1.22M 0.08% 210
2025
Q1 		$26.8M Buy
512,254
+21,071
+4% +$1.24M 0.08% 244
2024
Q4 		$28.4M Buy
491,183
+69,513
+16% +$4.31M 0.07% 268
2024
Q3 		$24M Sell
421,670
-158,382
-27% -$8.07M 0.06% 282
2024
Q2 		$26.6M Sell
580,052
-28,777
-5% -$1.13M 0.07% 253
2024
Q1 		$21.8M Buy
608,829
+6,052
+1% +$205K 0.06% 297
2023
Q4 		$19.2M Buy
602,777
+186,774
+45% +$5.28M 0.06% 293
2023
Q3 		$13.1M Buy
+416,003
New +$12.1M 0.04% 310
2020
Q4 		– Sell
-519,417
Closed -$13.8M – 365
2020
Q3 		$13.8M Buy
+519,417
New +$13.3M 0.05% 231

Other funds holding STEP

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Millennium Management
Millennium Management New York $276B AUM 44.8% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $999B AUM 46.22% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Capital World Investors
Capital World Investors Los Angeles, California $846B AUM 46.74% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Westfield Capital Management
Westfield Capital Management Boston, Massachusetts $30.6B AUM 61.81% 1-Year Est. Return

William Blair Investment Management's STEP Position: Q2 2026 in Review

William Blair Investment Management increased its StepStone Group (STEP) stake by 0.81% in Q2 2026, buying an estimated $769K and bringing the position to 1,930,015 shares worth $79.8M. The position accounts for 0.24% of the portfolio, ranked #119.

William Blair Investment Management first reported a position in STEP in Q3 2020 and has held it in 13 quarters since. The position peaked at $91.4M in Q1 2026. 273 funds tracked by Wall St. Rank hold STEP as of Q2 2026.

  • William Blair Investment Management held 1,930,015 shares of StepStone Group worth $79.8M as of Q2 2026.
  • William Blair Investment Management bought 15,538 StepStone Group shares in Q2 2026, an estimated $769K.
  • StepStone Group made up 0.24% of William Blair Investment Management's portfolio in Q2 2026, its #119 holding.
  • William Blair Investment Management first reported a position in StepStone Group in Q3 2020 and has held it in 13 quarters since.
  • William Blair Investment Management's StepStone Group position peaked at $91.4M in Q1 2026.
  • 273 funds tracked by Wall St. Rank held StepStone Group as of Q2 2026.

Based on William Blair Investment Management's 13F filing for Q2 2026, filed 12 Aug 2026.