What does CUSIP 403829104 represent in this 13F holders report?

CUSIP 403829104 is the security identifier for GYRO - Gyrodyne, LLC - Common Stock, par value $1.00 per share used to aggregate holder disclosures.

How many institutions held GYRO - Gyrodyne, LLC - Common Stock, par value $1.00 per share in Q1 2021?

10 institutional investors reported GYRO - Gyrodyne, LLC - Common Stock, par value $1.00 per share for Q1 2021. Use the holders table for investor-level position and value details.

Gyrodyne, LLC - Common Stock, par value $1.00 per share (GYRO)

CUSIP: 403829104

Q1 2021 13F Holders as of 31 Mar 2021

Security type / class: Equity / Common Stock, par value $1.00 per share
Total 13F shares: 534,815
Total 13F value: $8,139,000
Share change: +17,764
SEC-reported price per share: $15.36
Number of holders: 10
Value change: +$273,150
Number of buys: 3
Number of sells: 1
Shares outstanding: 2,208,085

Security key

403829104

Report period

Q1 2021

Institutions

Top holders

GYRO full security history Ownership snapshot Full 13F holder table Newer quarter: Q3 2025 Gyrodyne, LLC SEC filings Gyrodyne, LLC company facts

Broader feeds

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

Reporting periods

Holder history for CUSIP 403829104

Newer quarter: Q3 2025

Recent filing periods:

Q3 2026 Q2 2026 Q1 2026 Q4 2025 Q3 2025

Ownership snapshot

Top reported holders of GYRO - Gyrodyne, LLC - Common Stock, par value $1.00 per share (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

Grantham, Mayo, Van Otter...

Disclosed value leader

Grantham, Mayo, Van Otter...

Comparable rows

0/11

Latest evidence

31 Dec 2020

13F Highest disclosed value: $2,516,000 11 rows are not safely comparable across share classes. Showing 1-6 of 11 holder rows.

Quick read

Grantham, Mayo, Van Otterloo & Co. LLC has the largest disclosed position value at $2.52M.

0 of 11 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 Grantham, Mayo, Van Otterloo & Co. LLC's linked filing trail.

Disclosed position value Top 5

Grantham, Mayo, Van Otterloo & Co... $2.52M

TOWERVIEW LLC $1.65M

GABELLI & Co INVESTMENT ADVISERS,... $1.45M

Michael F. Price $1.39M

GABELLI FUNDS LLC $752K

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

Detailed SEC evidence table Showing 1-6 of 11 holder rows

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
Grantham, Mayo, Van Otterloo & Co. LLC	13F Company 13F	— denominator unverified	$2,516,000 148,088 shares	—	31 Dec 2020
TOWERVIEW LLC	13F Company 13F	— denominator unverified	$1,649,000 101,500 shares	—	31 Dec 2020
GABELLI & Co INVESTMENT ADVISERS, INC.	13F Company 13F	— denominator unverified	$1,454,000 89,494 shares	—	31 Dec 2020
Michael F. Price	13F Individual 13F	— denominator unverified	$1,390,000 85,508 shares	—	31 Dec 2020
GABELLI FUNDS LLC	13F Company 13F	— denominator unverified	$752,000 46,297 shares	—	31 Dec 2020
CSS LLC/IL	13F Company 13F	— denominator unverified	$495,000 30,454 shares	—	31 Dec 2020

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 Q1 2021

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

Institutions

534,815

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 Q1 2021 vs Q2 2026 Across Filers

Q2 2026 holders

Q1 2021 holders

Holder diff

-3

Investor	Q2 2026 Shares	Q1 2021 Shares	Share Diff	Share Chg %	Q2 2026 value	Q1 2021 value	Value change	Value Chg %

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

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend