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Stockbridge Partners’s Allison Transmission ALSN Stock Holding History

Stockbridge Partners’s Portfolio ALSN Stock Details ALSN Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$169M Buy
1,499,984
+469,586
+46% +$57M 3.56% 11
2026
Q1 		$121M Buy
+1,030,398
New +$117M 2.91% 11

Other funds holding ALSN

Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Boston Partners
Boston Partners Boston, Massachusetts $113B AUM 38.87% 1-Year Est. Return
Fuller & Thaler Asset Management
Fuller & Thaler Asset Management San Mateo, California $36.7B AUM 74.15% 1-Year Est. Return
LSV Asset Management
LSV Asset Management Chicago, Illinois $55.1B AUM 45.38% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Renaissance Technologies
Renaissance Technologies New York $72.6B AUM 54.88% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return

Stockbridge Partners's ALSN Position: Q2 2026 in Review

Stockbridge Partners increased its Allison Transmission (ALSN) stake by 46% in Q2 2026, buying an estimated $57M and bringing the position to 1,499,984 shares worth $169M. The position accounts for 3.56% of the portfolio, ranked #11.

Stockbridge Partners first reported a position in ALSN in Q1 2026 and has held it in 2 quarters since. 569 funds tracked by Wall St. Rank hold ALSN as of Q2 2026.

  • Stockbridge Partners held 1,499,984 shares of Allison Transmission worth $169M as of Q2 2026.
  • Stockbridge Partners bought 469,586 Allison Transmission shares in Q2 2026, an estimated $57M.
  • Allison Transmission made up 3.56% of Stockbridge Partners's portfolio in Q2 2026, its #11 holding.
  • Stockbridge Partners first reported a position in Allison Transmission in Q1 2026 and has held it in 2 quarters since.
  • 569 funds tracked by Wall St. Rank held Allison Transmission as of Q2 2026.

Based on Stockbridge Partners's 13F filing for Q2 2026, filed 14 Aug 2026.