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Institutional Ownership · SEC Form 13F

Who owns Ryerson Holding (RYZ)


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

Ownership as of the 2026-Q2 13F filings (latest filed 2026-09-22). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.

188
Institutional holders
48M
Shares held (tracked funds)

How the tape is positioned

62 tracked funds added or opened RYZ while 33 trimmed or exited it between 2026-Q1 and 2026-Q2 — the tape is split. When large holders disagree on a name, the funds moving first are sometimes ahead of the story.

A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.

Conviction spread

RYZ’s largest tracked holder by dollar value, BlackRock, Inc., sizes it at 0.0% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.0pp gap the other way — the median holder sizes RYZ more heavily than its largest holder by dollar value does.

Book-share is each fund’s reported value in RYZ 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

Between 2026-Q1 and 2026-Q2, across 188 tracked filers holding RYZ, 111 increased or opened the position and 92 reduced or closed it; over the same quarter, open-market insider Form 4s were net sales.

This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.

New buyers & exits

Funds opening or closing a position in RYZ between the 2026-Q1 and 2026-Q2 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.

New buyers 10

  • Assenagon Asset Management S.A.$4M
  • Verition Fund Management LLC$3M
  • Numerai GP LLC$2M
  • PDT Partners, LLC$2M
  • Walleye Capital LLC$2M
  • CastleKnight Management LP$613K

Full exits 16

  • CSM Advisors, LLC$6M
  • MILLENNIUM MANAGEMENT LLC$4M
  • Hudson Bay Capital Management LP$3M
  • Trexquant Investment LP$2M
  • HRT FINANCIAL LP$2M
  • JACOBS LEVY EQUITY MANAGEMENT, INC$2M

Largest adds

  • FRANKLIN RESOURCES INC$25M
  • BlackRock, Inc.$13M
  • Nuveen, LLC$11M
  • Platinum Equity Advisors, LLC/DE$8M
  • AMERIPRISE FINANCIAL INC$8M
  • FRONTIER CAPITAL MANAGEMENT CO LLC$7M

Largest trims

  • ARROWSTREET CAPITAL, LIMITED PARTNERSHIP$15M
  • CHARLES SCHWAB INVESTMENT MANAGEMENT INC$6M
  • DIMENSIONAL FUND ADVISORS LP$5M
  • CenterBook Partners LP$3M
  • AMERICAN CENTURY COMPANIES INC$2M
  • Invenomic Capital Management LP$2M

Institutional holders

One row per tracked fund, most shares held first (every row is from one quarter; reported value breaks ties). “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding.

FundSharesReported value% of valueQuarter
BlackRock, Inc. added4,891,419$120M10.2%2026-Q2
Platinum Equity Advisors, LLC/DE3,924,478$97M8.2%2026-Q2
FRANKLIN RESOURCES INC added3,791,237$93M7.9%2026-Q2
JB CAPITAL PARTNERS LP2,839,059$70M5.9%2026-Q2
DIMENSIONAL FUND ADVISORS LP trimmed2,696,963$66M5.6%2026-Q2
STATE STREET CORP trimmed2,205,813$54M4.6%2026-Q2
DONALD SMITH & CO., INC. added1,992,517$49M4.2%2026-Q2
VANGUARD CAPITAL MANAGEMENT LLC added1,958,273$48M4.1%2026-Q2
AMERICAN CENTURY COMPANIES INC trimmed1,861,721$46M3.9%2026-Q2
FRONTIER CAPITAL MANAGEMENT CO LLC added1,683,408$41M3.5%2026-Q2
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. added1,370,007$34M2.9%2026-Q2
CHARLES SCHWAB INVESTMENT MANAGEMENT INC trimmed1,165,452$29M2.4%2026-Q2
GEODE CAPITAL MANAGEMENT, LLC added1,155,870$28M2.4%2026-Q2
AEGIS FINANCIAL CORP1,116,978$27M2.3%2026-Q2
AMERIPRISE FINANCIAL INC added1,086,384$27M2.3%2026-Q2
GOLDMAN SACHS GROUP INC trimmed1,062,435$26M2.2%2026-Q2
VICTORY CAPITAL MANAGEMENT INC trimmed1,029,222$25M2.2%2026-Q2
NOMURA ASSET MANAGEMENT INTERNATIONAL INC. trimmed907,042$22M1.9%2026-Q2
Nuveen, LLC added701,623$17M1.5%2026-Q2
Invenomic Capital Management LP trimmed508,048$13M1.1%2026-Q2
NORTHERN TRUST CORP added449,985$11M0.9%2026-Q2
Allianz Asset Management GmbH added447,880$11M0.9%2026-Q2
VANGUARD PORTFOLIO MANAGEMENT LLC added439,970$11M0.9%2026-Q2
Bank of New York Mellon Corp added434,438$11M0.9%2026-Q2
Empowered Funds, LLC trimmed407,803$10M0.9%2026-Q2
FMR LLC added406,590$10M0.8%2026-Q2
MORGAN STANLEY added387,854$10M0.8%2026-Q2
BRIDGEWAY CAPITAL MANAGEMENT, LLC trimmed381,812$9M0.8%2026-Q2
ROBOTTI ROBERT added369,849$9M0.8%2026-Q2
TWO SIGMA INVESTMENTS, LP added313,790$8M0.7%2026-Q2
D. E. Shaw & Co., Inc. trimmed308,533$8M0.6%2026-Q2
VANGUARD FIDUCIARY TRUST CO added294,137$7M0.6%2026-Q2
Cerity Partners LLC added276,883$7M0.6%2026-Q2
GRIZZLYROCK CAPITAL, LLC trimmed248,007$6M0.5%2026-Q2
TOWLE & CO trimmed234,573$6M0.5%2026-Q2
SummitTX Capital, L.P. trimmed233,412$6M0.5%2026-Q2
MAI Capital Management trimmed215,874$5M0.5%2026-Q2
AQR CAPITAL MANAGEMENT LLC trimmed203,819$5M0.4%2026-Q2
UBS Group AG added190,240$5M0.4%2026-Q2
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP trimmed156,985$4M0.3%2026-Q2
Assenagon Asset Management S.A. added153,721$4M0.3%2026-Q2
Ancora Advisors LLC151,992$4M0.3%2026-Q2
BANK OF AMERICA CORP /DE/ added130,711$3M0.3%2026-Q2
Russell Investments Group, Ltd. added115,845$3M0.2%2026-Q2
Man Group plc added108,888$3M0.2%2026-Q2
JPMORGAN CHASE & CO trimmed102,783$3M0.2%2026-Q2
Verition Fund Management LLC added102,080$3M0.2%2026-Q2
FIFTH THIRD BANCORP added95,603$2M0.2%2026-Q2
SEI INVESTMENTS CO trimmed94,864$2M0.2%2026-Q2
Swiss National Bank trimmed88,200$2M0.2%2026-Q2
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC added86,588$2M0.2%2026-Q2
Numerai GP LLC new86,376$2M0.2%2026-Q2
XTX Topco Ltd trimmed84,131$2M0.2%2026-Q2
Atom Investors LP added80,434$2M0.2%2026-Q2
COMMONWEALTH EQUITY SERVICES, LLC trimmed80,174$2M0.2%2026-Q2
CDC Financial, Inc. trimmed78,446$2M0.2%2026-Q2
Invesco Ltd. trimmed78,240$2M0.2%2026-Q2
GRACE & WHITE INC /NY76,567$2M0.2%2026-Q2
BALYASNY ASSET MANAGEMENT L.P. added76,049$2M0.2%2026-Q2
PRICE T ROWE ASSOCIATES INC /MD/ added73,397$2M0.2%2026-Q2
BNP PARIBAS FINANCIAL MARKETS added70,695$2M0.1%2026-Q2
PDT Partners, LLC new66,901$2M0.1%2026-Q2
Walleye Capital LLC trimmed61,953$2M0.1%2026-Q2
Quantinno Capital Management LP added61,180$2M0.1%2026-Q2
RHUMBLINE ADVISERS added60,379$1M0.1%2026-Q2
BETO FINANCIAL GROUP, LLC trimmed58,880$2M0.1%2026-Q2
SUSQUEHANNA INTERNATIONAL GROUP, LLP added56,112$1M0.1%2026-Q2
Engineers Gate Manager LP added55,908$1M0.1%2026-Q2
ALLIANCEBERNSTEIN L.P. added55,800$1M0.1%2026-Q2
BARCLAYS PLC added53,939$1M0.1%2026-Q2
Vanguard Global Advisers, LLC trimmed53,835$1M0.1%2026-Q2
DEUTSCHE BANK AG\ trimmed51,716$1M0.1%2026-Q2
Mutual Advisors, LLC trimmed47,240$1M0.1%2026-Q2
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM added47,223$1M0.1%2026-Q2
WELLS FARGO & COMPANY/MN added44,515$1M0.1%2026-Q2
Legal & General Group Plc added40,848$1M0.1%2026-Q2
RENAISSANCE TECHNOLOGIES LLC trimmed35,502$874K0.1%2026-Q2
DBA TRADING, LLC35,000$787K0.1%2026-Q2
OSAIC HOLDINGS, INC. added34,473$848K0.1%2026-Q2
STATE OF WISCONSIN INVESTMENT BOARD added34,042$838K0.1%2026-Q2
HSBC HOLDINGS PLC added33,673$838K0.1%2026-Q2
Squarepoint Ops LLC added33,309$820K0.1%2026-Q2
LOS ANGELES CAPITAL MANAGEMENT LLC trimmed33,035$813K0.1%2026-Q2
Brevan Howard Capital Management LP added32,971$811K0.1%2026-Q2
MASSACHUSETTS FINANCIAL SERVICES CO /MA/ added30,437$749K0.1%2026-Q2
SummerHaven Investment Management, LLC30,213$744K0.1%2026-Q2
Prescott General Partners LLC30,000$738K0.1%2026-Q2
VANGUARD ASSET MANAGEMENT, Ltd29,901$736K0.1%2026-Q2
CITIGROUP INC added29,872$735K0.1%2026-Q2
CenterBook Partners LP trimmed28,096$691K0.1%2026-Q2
MetLife Investment Management, LLC added26,862$661K0.1%2026-Q2
CastleKnight Management LP trimmed24,900$613K0.1%2026-Q2
GREAT LAKES ADVISORS, LLC new23,946$589K0.1%2026-Q2
Jain Global LLC new22,284$548K0.0%2026-Q2
ExodusPoint Capital Management, LP trimmed21,566$531K0.0%2026-Q2
Zurcher Kantonalbank (Zurich Cantonalbank) added20,828$513K0.0%2026-Q2
Jupiter Topco LLC new20,363$501K0.0%2026-Q2
Ethic Inc. added20,172$496K0.0%2026-Q2
Aquatic Capital Management LLC added18,937$466K0.0%2026-Q2
Odyssean, LLC trimmed18,154$447K0.0%2026-Q2

Ownership over time

Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.

HoldersTotal shares

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.

Learn how to read institutional ownership