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ALSN Institutional Ownership & 13F Holders | SmartMoneyDB

ALSNALLISON TRANSMISSION HLDGS I

COM · CUSIP 01973R101

Smart Money Ownership

Of the 18 tracked institutions holding ALSN, 11 have a 3-year clone track record — 8 of them beat the S&P. Average holder's clone alpha: +2.4pt. It's a gauge of who owns the name, not just how many.

$218.6M · 0.3% of book

ALSN (ALLISON TRANSMISSION HLDGS I) Institutional Ownership Summary

Among the 18 tracked institutional investors we monitor, ALSN (ALLISON TRANSMISSION HLDGS I) is held with a combined value of $3.66B across 33,627,314 shares. The largest holder is FMR LLC with a position worth $1.40B (0.06% of their portfolio). Magnetar Financial LLC opened a new position in the most recent quarter. 8 funds increased their holdings. 9 funds reduced their position.

Total Institutional Value

$3.66B

Total Shares Held

33,627,314

Institutional Holders

% of Shares Outstanding

40.7%

of 82.58M shares · SEC 2026-07-22

Days to Cover

3.7-13.7%

3.13M shares short · FINRA 2026-08-14

Tracked 13F institutions hold 40.7% of ALSN's shares outstanding. This is a floor: 13F filings arrive on a ~45-day lag and we track only a subset of institutional filers, so true institutional ownership is higher. Shares-outstanding is the latest SEC cover-page figure (as of 2026-07-22), not a live float.

This Quarter's Biggest Movers

Ranked by estimated dollars moved (share change × implied price). 13F data lags up to 45 days.

Biggest Buyers

Stockbridge Partners LLC+46% shares~$53.0M MILLENNIUM MANAGEMENT LLC+118% shares~$32.1M BlackRock, Inc.+5% shares~$20.9M CITADEL ADVISORS LLC+57% shares~$19.6M ADAGE CAPITAL PARTNERS GP, L.L.C.+169% shares~$15.2M

13F Institutional Holders

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RENAISSANCE TECHNOLOGIES LLC

Stockbridge Partners LLC

3.56% of book+45.6%

$169.11M

AQR CAPITAL MANAGEMENT LLC

0.04% of book-8.5%

$127.44M

MILLENNIUM MANAGEMENT LLC

HARRIS ASSOCIATES L P

0.06% of book-24.3%

$45.41M

#	Fund	Value↓	Shares	Portfolio %	Change
1	FMR LLC	$1.40B	12,417,518	0.06%	-0.3%
2	VANGUARD GROUP INC	$838.31M	8,562,872	0.01%	-1.3%
3	BlackRock, Inc.	$448.23M	3,975,802	0.01%	+4.9%
4	RENAISSANCE TECHNOLOGIES LLC	$218.60M	1,938,997	0.30%	-14.2%
5	STATE STREET CORP	$173.41M	1,538,166	0.01%	+1.0%
6	Stockbridge Partners LLC	$169.11M	1,499,984	3.56%	+45.6%
7	AQR CAPITAL MANAGEMENT LLC	$127.44M	1,130,415	0.04%	-8.5%
8	MILLENNIUM MANAGEMENT LLC	$59.30M	525,969	0.04%	+118.4%
9	CITADEL ADVISORS LLC	$53.99M	478,893	0.03%	+57.1%
10	HARRIS ASSOCIATES L P	$45.41M	402,762	0.06%	-24.3%

Activist & Large Holders (13D/13G)

Investor	Ownership	Type	Filed
VANGUARD PORTFOLIO MANAGEMENT LLC	4.8%	13G/A	2026-07-31

SEC Schedule 13D (activist) and 13G (passive) filings for ALSN. Filed when an investor acquires 5%+ ownership.

Frequently Asked Questions

Which institutional investors own the most ALSN stock?

As of the latest SEC 13F filings, FMR LLC is the largest institutional holder of ALSN with a position worth $1.40B, representing 0.06% of their portfolio. In total, 18 institutional investors hold ALSN with a combined value of $3.66B.

Are hedge funds buying or selling ALSN?

In the most recent quarter, 1 fund opened a new position in ALSN. Additionally, 8 increased their holdings and 9 reduced their positions.

What percentage of ALSN is owned by institutional investors?

Institutional investors hold $3.66B worth of ALSN stock across 18 positions. The largest institutional holder is FMR LLC with $1.40B in holdings.

What is a 13F filing and why does it matter for ALSN?

A 13F filing is a quarterly report required by the SEC from institutional investment managers with over $100 million in assets. It discloses their holdings in U.S. equities. For ALSN, these filings reveal which major funds are accumulating or reducing positions, providing insights into institutional sentiment.

Track ALSN institutional moves

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