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ALSN · Allison Transmission Holdings Inc

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$132.49 -0.74 (-0.56%)
Market Cap
$11.00B
Shares
82.58M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Holders: 564
Total Value: $9,601,817,802
Total Shares: 85,193,821

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 564 13F filers · Δ vs Mar 31, 2026
Top Holder
14.6%
Sep 2023 → Jun 2026 · range 11.4% – 15.4%
−0.2 pts
Top 5
32.1%
Sep 2023 → Jun 2026 · range 32.1% – 38.4%
−0.6 pts
Top 10
44.6%
Sep 2023 → Jun 2026 · range 44.6% – 52.7%
−1.7 pts
HHI
367
Sep 2023 → Jun 2026 · range 367 – 480
Broadly held−12

Quarterly Activity

vs Mar 31, 2026
New
83
Increased
172
Decreased
231
Sold Out
74
Unchanged
78
Holder count: +9
Institutional value: -2.6%
Shares held: +1.1%

Top Buyers

vs Mar 31, 2026
Institution Added Now Holds Open

Top Sellers

vs Mar 31, 2026
Institution Sold Now Holds Open

Top New Positions

vs Mar 31, 2026
Institution Acquired Value (USD) Open

Top Sold-Out Positions

vs Mar 31, 2026
Institution Previously Held Last Value (USD) Open
Showing 100 of 571
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 1411207 CUSIP 01973R101 13F (30d) 470 filings 460 filers Visit website Investor relations