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ROCK in the 13F filings

Gibraltar Industries Inc · CUSIP 374689107

Sector · Materials
Quarter
Q2 2026Q1 2026Q4 2025Q3 2025Q2 2025Q1 2025Q4 2024Q3 2024Q2 2024Q1 2024Q4 2023Q3 2023
Quarter end
31 Mar 2024
the date the book describes
Filed
15 May 2024
latest of these filings; the earliest 9 May 2024
Managers listing it
5
at least, of 95 tracked, among listed positions
Comparable managers
93
filed both Q4 2023 and Q1 2024; 5 listed it in both
Shares listed
833,680
combined, among listed positions
Reported value
$67m
combined, at the quarter end

Among the 93 comparable managers: 3 buyers (opened or added shares) and 2 sellers (trimmed or exited), at least, among listed positions. Their net change in shares is not known from listed positions, because at least one of them lists it in only one of the two quarters.

Managers listing ROCK in Q1 2024

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q4 2023, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

5 of 5 holders

ActionFiling
Point72 Asset Management LP363,388$29m0.07%Added+119,64915 May 2024 (the filing on sec.gov)
Arrowstreet Capital LP277,573$22munder 0.1%Added+103,45715 May 2024 (the filing on sec.gov)
First Eagle Investment Management LLC94,415$7.6munder 0.1%Added+3,9409 May 2024 (the filing on sec.gov)
GAMCO Investors Inc90,170$7.3m0.07%Trimmed-10014 May 2024 (the filing on sec.gov)
Winton Group Ltd8,134$655kunder 0.1%Trimmed-90614 May 2024 (the filing on sec.gov)

Largest increases and reductions, by shares

Q4 2023 to Q1 2024, among managers that listed it in both quarters or opened it.

Increases

Reductions

New positions and exits

At least these many: a manager is shown exiting only where its own filing shows the position gone.

New (0)

No new position among listed positions.

Exited (0)

No exit shown by a manager’s own filing.

Ownership over time

Every quarter on file. A quarter-end value moves with the price as well as with the shares held; buyers and sellers count comparable managers, by shares.
2 in Q3 2024 to 3 in Q2 2026

Tracked managers listing it, at least.

02462016201720182020202120222023202420252026
the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.
ROCK by quarter
QuarterHoldersReported valueBuyersSellers
Q4 20152$29mn.a.n.a.
Q1 20161$30mn.a.n.a.
Q2 20161$29mn.a.n.a.
Q3 20161$36mn.a.n.a.
Q4 20162$53mn.a.n.a.
Q1 20171$49mn.a.n.a.
Q2 20171$3.2mn.a.n.a.
Q3 20173$5.3mn.a.n.a.
Q4 20172$3.8mn.a.n.a.
Q1 20181$1.3mn.a.n.a.
Q2 20181$5.3mn.a.n.a.
Q3 20181$9.6mn.a.n.a.
Q3 20192$11mn.a.n.a.
Q4 20194$13mn.a.n.a.
Q1 20202$16mn.a.n.a.
Q2 20201$2.5mn.a.n.a.
Q3 20203$237mn.a.n.a.
Q4 20203$269mn.a.n.a.
Q1 20213$333mn.a.n.a.
Q2 20212$3.7mn.a.n.a.
Q3 20212$4.1mn.a.n.a.
Q4 20212$4.6mn.a.n.a.
Q1 20223$6.3mn.a.n.a.
Q2 20224$8.8mn.a.n.a.
Q3 20223$8.0mn.a.n.a.
Q4 20222$6.1mn.a.n.a.
Q1 20232$8.0mn.a.n.a.
Q2 20233$12mn.a.n.a.
Q3 20234$40mn.a.n.a.
Q4 20236$79m24
Q1 20245$67m32
Q2 20244$70m22
Q3 20242$11m02
Q4 20241$5.1m02
Q1 20252$123m20
Q2 20252$8.9m20
Q3 20251$5.7m01
Q4 20253$90m1413
Q1 20264$115m1411
Q2 20263$95m188

Compare with…

Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.

ROCK and LIN →ROCK and GLW →ROCK and HWM →Choose a stock to compare with ROCK →

How much of the picture this is

A 13F is a manager’s long US-listed equity book at a quarter end, filed up to 45 days later. It shows no shorts, cash, bonds or performance, and it is never today’s portfolio. Large books are listed to their largest positions, so a manager missing from this table may still hold a small position below that line. These are 95 tracked managers, not the institutional market.

Which funds own ROCK, latest filings →Back to the 13F Explorer →