Ryerson Holding Corp - Common Stock, $0.01 par value, 100,000,000 shares authorized (RYZ)

Q: What does CUSIP 783754104 represent in this 13F holders report?

CUSIP 783754104 is the security identifier for RYZ - Ryerson Holding Corp - Common Stock, $0.01 par value, 100,000,000 shares authorized used to aggregate holder disclosures.

Q: How many institutions held RYZ - Ryerson Holding Corp - Common Stock, $0.01 par value, 100,000,000 shares authorized in Q2 2021?

96 institutional investors reported RYZ - Ryerson Holding Corp - Common Stock, $0.01 par value, 100,000,000 shares authorized for Q2 2021. Use the holders table for investor-level position and value details.

CUSIP: 783754104

Q2 2021 13F Holders as of 30 Jun 2021

Security type / class: Equity / Common Stock, $0.01 par value, 100,000,000 shares authorized
Total 13F shares: 35,749,794
Total 13F value: $521,941,331
Share change: -95,674
SEC-reported price per share: $14.60
Number of holders: 96
Value change: -$2,136,976
Number of buys: 38
Number of sells: 55
Shares outstanding: 51,611,263

Security key

783754104

Report period

Q2 2021

Institutions

Top holders

RYZ full security history Ownership snapshot Full 13F holder table Newer quarter: Q4 2025 Ryerson Holding Corp SEC filings Ryerson Holding Corp company facts

Broader feeds

Latest 13F filings Latest 13D/G filings Investors directory

Reporting periods

Holder history for CUSIP 783754104

Newer quarter: Q4 2025

Recent filing periods:

Q3 2026 Q4 2025

Ownership snapshot

Top reported holders of RYZ - Ryerson Holding Corp - Common Stock, $0.01 par value, 100,000,000 shares authorized (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader

Platinum Equity Advisors,...

Disclosed value leader

Platinum Equity Advisors,...

Comparable rows

0/15

Latest evidence

31 Mar 2021

13F Highest disclosed value: $358,479,000 15 rows are not safely comparable across share classes. Showing 1-6 of 15 holder rows.

Quick read

Platinum Equity Advisors, LLC/DE has the largest disclosed position value at $358.48M.

0 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens Platinum Equity Advisors, LLC/DE's linked filing trail.

Disclosed position value Top 5

Platinum Equity Advisors, LLC/DE $358.48M

BlackRock Finance, Inc. $33.37M

TOWLE & CO $26.07M

DIMENSIONAL FUND ADVISORS LP $23.59M

ACADIAN ASSET MANAGEMENT LLC $15.98M

Value bars compare disclosed positions; verify each figure against the linked filing evidence.

Detailed SEC evidence table Showing 1-6 of 15 holder rows

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
Platinum Equity Advisors, LLC/DE	13F Company 13F	— denominator unverified	$358,479,000 21,037,500 shares	—	31 Mar 2021
BlackRock Finance, Inc.	13F Company 13F	— denominator unverified	$33,373,000 1,958,469 shares	—	31 Mar 2021
TOWLE & CO	13F Company 13F	— denominator unverified	$26,071,000 1,529,971 shares	—	31 Mar 2021
DIMENSIONAL FUND ADVISORS LP	13F Company 13F	— denominator unverified	$23,589,000 1,384,455 shares	—	31 Mar 2021
ACADIAN ASSET MANAGEMENT LLC	13F Company 13F	— denominator unverified	$15,981,000 937,933 shares	—	31 Mar 2021
VANGUARD GROUP INC	13F Company 13F	— denominator unverified	$14,701,000 862,806 shares	—	31 Mar 2021

How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

13F holder rows

Institutional holders as of Q2 2021

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions

35,749,794

Rows available

Investor	Option	Weight %	Change %	SEC-reported value	* Price	Shares	Share Change	Activity	Report Period

^* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.

Compare Q2 2021 vs Q4 2025 Across Filers

Q4 2025 holders

144

Q2 2021 holders

Holder diff

-48

Investor	Q4 2025 Shares	Q2 2021 Shares	Share Diff	Share Chg %	Q4 2025 value	Q2 2021 value	Value change	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend