William Blair & Company
FSS icon

William Blair & Company’s Federal Signal FSS Stock Holding History

William Blair & Company’s Portfolio FSS Stock Details FSS Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$4.75M Sell
36,958
-5,901
-14% -$677K 0.01% 534
2026
Q1 		$4.63M Sell
42,859
-2,683
-6% -$303K 0.01% 519
2025
Q4 		$4.95M Sell
45,542
-2,801
-6% -$321K 0.01% 515
2025
Q3 		$5.75M Buy
48,343
+7,988
+20% +$959K 0.02% 488
2025
Q2 		$4.29M Buy
40,355
+10,478
+35% +$933K 0.01% 537
2025
Q1 		$2.2M Sell
29,877
-7,787
-21% -$696K 0.01% 690
2024
Q4 		$3.48M Buy
37,664
+22,340
+146% +$2.05M 0.01% 584
2024
Q3 		$1.43M Buy
15,324
+762
+5% +$69.7K ﹤0.01% 803
2024
Q2 		$1.22M Buy
14,562
+11,835
+434% +$1.01M ﹤0.01% 815
2024
Q1 		$231K Hold
2,727
– – ﹤0.01% 1348
2023
Q4 		$209K Buy
+2,727
New +$182K ﹤0.01% 1380

Other funds holding FSS

BlackRock
BlackRock New York $6.73T AUM 46.02% 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
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
Neuberger Berman Group
Neuberger Berman Group New York $150B AUM 40.08% 1-Year Est. Return
WA
Wasatch Advisors Salt Lake City, Utah $15.3B AUM 25.06% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return

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

William Blair & Company reduced its Federal Signal (FSS) stake by 14% in Q2 2026, selling an estimated $677K and leaving 36,958 shares worth $4.75M. The position accounts for 0.01% of the portfolio, ranked #534.

William Blair & Company first reported a position in FSS in Q4 2023 and has held it in 11 quarters since. The position peaked at $5.75M in Q3 2025. 471 funds tracked by Wall St. Rank hold FSS as of Q2 2026.

  • William Blair & Company held 36,958 shares of Federal Signal worth $4.75M as of Q2 2026.
  • William Blair & Company sold 5,901 Federal Signal shares in Q2 2026, an estimated $677K.
  • Federal Signal made up 0.01% of William Blair & Company's portfolio in Q2 2026, its #534 holding.
  • William Blair & Company first reported a position in Federal Signal in Q4 2023 and has held it in 11 quarters since.
  • William Blair & Company's Federal Signal position peaked at $5.75M in Q3 2025.
  • 471 funds tracked by Wall St. Rank held Federal Signal as of Q2 2026.

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