William Blair & Company
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William Blair & Company’s Acuity Brands AYI Stock Holding History

William Blair & Company’s Portfolio AYI Stock Details AYI Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2018
Q4 		– Sell
-200
Closed -$31K – 1665
2018
Q3 		$31K Sell
200
-100
-33% -$14.4K ﹤0.01% 1498
2018
Q2 		$35K Buy
+300
New +$36.5K ﹤0.01% 1453
2017
Q3 		– Sell
-900
Closed -$183K – 1373
2017
Q2 		$183K Buy
900
+600
+200% +$106K ﹤0.01% 1361
2017
Q1 		$61K Buy
+300
New +$63.4K ﹤0.01% 1320

Other funds holding AYI

Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
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
AQR Capital Management
AQR Capital Management Greenwich, Connecticut $287B AUM 42.33% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Fuller & Thaler Asset Management
Fuller & Thaler Asset Management San Mateo, California $36.7B AUM 74.15% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
American Century Companies
American Century Companies Kansas City, Missouri $226B AUM 44.75% 1-Year Est. Return

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

William Blair & Company increased its Acuity Brands (AYI) stake by 7.4% in Q2 2026, buying an estimated $238K and bringing the position to 11,591 shares worth $4.37M. The position accounts for 0.01% of the portfolio, ranked #554.

William Blair & Company first reported a position in AYI in Q4 2014 and has held it in 47 quarters since. The position peaked at $46.2M in Q4 2015. 638 funds tracked by Wall St. Rank hold AYI as of Q2 2026.

  • William Blair & Company held 11,591 shares of Acuity Brands worth $4.37M as of Q2 2026.
  • William Blair & Company bought 803 Acuity Brands shares in Q2 2026, an estimated $238K.
  • Acuity Brands made up 0.01% of William Blair & Company's portfolio in Q2 2026, its #554 holding.
  • William Blair & Company first reported a position in Acuity Brands in Q4 2014 and has held it in 47 quarters since.
  • William Blair & Company's Acuity Brands position peaked at $46.2M in Q4 2015.
  • 638 funds tracked by Wall St. Rank held Acuity Brands as of Q2 2026.

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