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Institutional Ownership · SEC Form 13F

Who owns YSS


Which tracked institutional funds hold YSS, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See YSS company fundamentals →

Ownership as of the 2026-Q1 13F filings (latest filed 2026-05-18). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.

140
Institutional holders
52M
Shares held (tracked funds)

Conviction spread

YSS’s largest tracked holder by dollar value, AE INDUSTRIAL PARTNERS, LP, sizes it at 15.4% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 15.4pp conviction gap — its largest holder concentrates the name more heavily than the typical one.

Book-share is each fund’s reported value in YSS divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.

Institutional & insider positioning

Only one quarter (2026-Q1) of 13F history is available — a quarter-over-quarter accumulation delta needs two.

We do not publish a positioning read for a window we cannot measure honestly. A starting question, not a verdict.

Institutional holders

One row per tracked fund, largest reported value first. “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding.

FundSharesReported value% of valueQuarter
AE INDUSTRIAL PARTNERS, LP new11,297,923$250M21.6%2026-Q1
BlackRock, Inc. new9,349,198$207M17.9%2026-Q1
Allianz Asset Management GmbH new2,726,783$60M5.2%2026-Q1
Bank of New York Mellon Corp new1,680,305$37M3.2%2026-Q1
Clearbridge Investments, LLC new1,345,454$30M2.6%2026-Q1
WELLINGTON MANAGEMENT GROUP LLP new1,246,923$28M2.4%2026-Q1
VOYA INVESTMENT MANAGEMENT LLC new1,077,610$24M2.1%2026-Q1
UBS Group AG new1,053,844$23M2.0%2026-Q1
Hood River Capital Management LLC new988,510$22M1.9%2026-Q1
Granahan Investment Management, LLC new967,610$21M1.9%2026-Q1
CITADEL ADVISORS LLC new947,893$21M1.8%2026-Q1
VANGUARD CAPITAL MANAGEMENT LLC new839,464$19M1.6%2026-Q1
LORD, ABBETT & CO. LLC new817,976$18M1.6%2026-Q1
VANGUARD PORTFOLIO MANAGEMENT LLC new787,414$17M1.5%2026-Q1
Allspring Global Investments Holdings, LLC new732,251$17M1.5%2026-Q1
Artisan Partners Limited Partnership new705,746$16M1.4%2026-Q1
Burkehill Global Management, LP new668,705$15M1.3%2026-Q1
ArrowMark Colorado Holdings LLC new648,504$14M1.2%2026-Q1
AMERIPRISE FINANCIAL INC new622,896$14M1.2%2026-Q1
Daiwa Securities Group Inc. new622,792$14M1.2%2026-Q1
ExodusPoint Capital Management, LP new593,122$13M1.1%2026-Q1
Stephens Investment Management Group LLC new571,847$13M1.1%2026-Q1
MASSACHUSETTS FINANCIAL SERVICES CO /MA/ new518,343$11M1.0%2026-Q1
SCHRODER INVESTMENT MANAGEMENT GROUP new485,456$10M0.9%2026-Q1
SYSTEMATIC FINANCIAL MANAGEMENT LP new456,924$10M0.9%2026-Q1
Temasek Holdings (Private) Ltd new450,000$10M0.9%2026-Q1
GEODE CAPITAL MANAGEMENT, LLC new428,080$9M0.8%2026-Q1
SEI INVESTMENTS CO new415,456$9M0.8%2026-Q1
WESTWOOD HOLDINGS GROUP INC new409,186$9M0.8%2026-Q1
Ghisallo Capital Management LLC new407,837$9M0.8%2026-Q1
HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND new400,000$9M0.8%2026-Q1
Roubaix Capital, LLC new382,906$8M0.7%2026-Q1
AMERICAN CENTURY COMPANIES INC new364,550$8M0.7%2026-Q1
FRANKLIN RESOURCES INC new359,679$8M0.7%2026-Q1
STATE STREET CORP new346,049$8M0.7%2026-Q1
BALYASNY ASSET MANAGEMENT L.P. new305,038$7M0.6%2026-Q1
Ophir Asset Management Pty Ltd new300,664$7M0.6%2026-Q1
Alyeska Investment Group, L.P. new288,632$6M0.6%2026-Q1
FEDERATED HERMES, INC. new288,500$6M0.6%2026-Q1
CenterBook Partners LP new288,474$6M0.6%2026-Q1
MORGAN STANLEY new283,663$6M0.5%2026-Q1
Alpine Global Management, LLC new247,079$5M0.5%2026-Q1
Longaeva Partners L.P. new210,000$5M0.4%2026-Q1
Resolute Capital Asset Partners LLC new204,206$5M0.4%2026-Q1
Weiss Asset Management LP new202,156$4M0.4%2026-Q1
Hudson Bay Capital Management LP new197,121$4M0.4%2026-Q1
NEXT CENTURY GROWTH INVESTORS LLC new191,817$4M0.4%2026-Q1
NEW YORK STATE COMMON RETIREMENT FUND new178,593$4M0.3%2026-Q1
Aperture Investors, LLC new165,119$4M0.3%2026-Q1
CHARLES SCHWAB INVESTMENT MANAGEMENT INC new156,290$3M0.3%2026-Q1
Swedbank AB new154,568$3M0.3%2026-Q1
Blackstone Inc. new150,000$3M0.3%2026-Q1
SEVEN GRAND MANAGERS, LLC new150,000$3M0.3%2026-Q1
NORTHERN TRUST CORP new136,622$3M0.3%2026-Q1
VANGUARD FIDUCIARY TRUST CO new128,227$3M0.2%2026-Q1
Zimmer Partners, LP new115,000$3M0.2%2026-Q1
BANK OF AMERICA CORP /DE/ new110,848$2M0.2%2026-Q1
LMR Partners LLP new110,689$2M0.2%2026-Q1
Stenham Asset Management Ltd new110,651$2M0.2%2026-Q1
Brevan Howard Capital Management LP new108,711$2M0.2%2026-Q1
D. E. Shaw & Co., Inc. new100,926$2M0.2%2026-Q1
Schonfeld Strategic Advisors LLC new100,000$2M0.2%2026-Q1
FMR LLC new95,580$2M0.2%2026-Q1
Empyrean Capital Partners, LP new95,000$2M0.2%2026-Q1
WELLS FARGO & COMPANY/MN new90,895$2M0.2%2026-Q1
XTX Topco Ltd new90,728$2M0.2%2026-Q1
Orion Porfolio Solutions, LLC new81,560$2M0.2%2026-Q1
H Squared Management LP new81,250$2M0.2%2026-Q1
Diametric Capital, LP new73,854$2M0.1%2026-Q1
FRED ALGER MANAGEMENT, LLC new68,781$2M0.1%2026-Q1
RENAISSANCE TECHNOLOGIES LLC new67,171$1M0.1%2026-Q1
RAYMOND JAMES FINANCIAL INC new66,227$1M0.1%2026-Q1
Walleye Capital LLC new54,007$1M0.1%2026-Q1
GOLDMAN SACHS GROUP INC new53,649$1M0.1%2026-Q1
STATE OF WISCONSIN INVESTMENT BOARD new40,000$887K0.1%2026-Q1
TWO SIGMA INVESTMENTS, LP new38,356$850K0.1%2026-Q1
ROYAL BANK OF CANADA new38,296$849K0.1%2026-Q1
SCOPUS ASSET MANAGEMENT, L.P. new32,932$730K0.1%2026-Q1
Woodline Partners LP new30,000$665K0.1%2026-Q1
Polymer Capital Management (US) LLC new30,000$665K0.1%2026-Q1
JPMORGAN CHASE & CO new29,523$621K0.1%2026-Q1
TEACHERS RETIREMENT SYSTEM OF THE STATE OF KENTUCKY new22,295$494K0.0%2026-Q1
Davidson Kempner Capital Management LP new21,400$474K0.0%2026-Q1
HARBOR CAPITAL ADVISORS, INC. new21,239$471K0.0%2026-Q1
Atom Investors LP new20,881$463K0.0%2026-Q1
Nuveen, LLC new20,666$458K0.0%2026-Q1
EXCHANGE TRADED CONCEPTS, LLC new17,902$397K0.0%2026-Q1
GAMCO INVESTORS, INC. ET AL new17,847$396K0.0%2026-Q1
OXFORD ASSET MANAGEMENT LLP new17,763$394K0.0%2026-Q1
BARCLAYS PLC new16,842$373K0.0%2026-Q1
GABELLI FUNDS LLC new15,572$345K0.0%2026-Q1
RHUMBLINE ADVISERS new15,450$343K0.0%2026-Q1
Covalis Capital LLP new15,000$333K0.0%2026-Q1
READYSTATE ASSET MANAGEMENT LP new15,000$333K0.0%2026-Q1
TUDOR INVESTMENT CORP ET AL new14,276$316K0.0%2026-Q1
LPL Financial LLC new12,743$283K0.0%2026-Q1
PRICE T ROWE ASSOCIATES INC /MD/ new12,568$279K0.0%2026-Q1
Squarepoint Ops LLC new12,534$278K0.0%2026-Q1
PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO new12,023$267K0.0%2026-Q1
SUSQUEHANNA INTERNATIONAL GROUP, LLP new11,776$261K0.0%2026-Q1

Reading this table

Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.

About 13F filings

A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.

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