William Blair Investment Management
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William Blair Investment Management’s Monro MNRO Stock Holding History

William Blair Investment Management’s Portfolio MNRO Stock Details MNRO Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q4 		– Sell
-669,478
Closed -$12M – 441
2025
Q3 		$12M Sell
669,478
-324,400
-33% -$5.32M 0.03% 311
2025
Q2 		$14.8M Sell
993,878
-80,847
-8% -$1.16M 0.04% 308
2025
Q1 		$15.6M Sell
1,074,725
-46,302
-4% -$885K 0.04% 312
2024
Q4 		$27.8M Buy
1,121,027
+23,184
+2% +$635K 0.07% 270
2024
Q3 		$31.7M Buy
1,097,843
+91,083
+9% +$2.35M 0.08% 221
2024
Q2 		$24M Sell
1,006,760
-2,026
-0.2% -$54K 0.06% 275
2024
Q1 		$31.8M Buy
1,008,786
+195,955
+24% +$6.06M 0.08% 233
2023
Q4 		$23.8M Buy
+812,831
New +$22.9M 0.07% 268
2016
Q2 		– Sell
-56,737
Closed -$4.05M – 466
2016
Q1 		$4.05M Buy
56,737
+3,262
+6% +$216K 0.02% 364
2015
Q4 		$3.54M Sell
53,475
-47,120
-47% -$3.35M 0.01% 371
2015
Q3 		$6.79M Buy
+100,595
New +$6.43M 0.01% 763

Other funds holding MNRO

IC
Icahn Carl Sunny Isles Beach, Florida $8.26B AUM 15.11% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
GI
GAMCO Investors Greenwich, Connecticut $11.1B AUM 41.79% 1-Year Est. Return
Adage Capital Partners
Adage Capital Partners Boston, Massachusetts $71.3B AUM 56.8% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
Millennium Management
Millennium Management New York $276B AUM 44.8% 1-Year Est. Return
ECM
Estuary Capital Management Wayzata, Minnesota $589M AUM 9.29% 1-Year Est. Return

William Blair Investment Management's MNRO Position: Q4 2025 in Review

William Blair Investment Management sold out of Monro (MNRO) in Q4 2025, closing a stake of 669,478 shares — an estimated $12M sold.

William Blair Investment Management first reported a position in MNRO in Q3 2015 and held it in 11 quarters. The position peaked at $31.8M in Q1 2024. 177 funds tracked by Wall St. Rank hold MNRO as of Q4 2025.

  • William Blair Investment Management reported no remaining Monro position as of Q4 2025 after selling out during the quarter.
  • William Blair Investment Management sold 669,478 Monro shares in Q4 2025, an estimated $12M.
  • William Blair Investment Management first reported a position in Monro in Q3 2015 and held it in 11 quarters.
  • William Blair Investment Management's Monro position peaked at $31.8M in Q1 2024.
  • 177 funds tracked by Wall St. Rank held Monro as of Q4 2025.

Based on William Blair Investment Management's 13F filing for Q4 2025, filed 9 Feb 2026.