How many shares of ROCK does NORTHERN TRUST CORP own?

As of 2026-Q2, NORTHERN TRUST CORP holds 353,253 shares of ROCK (GIBRALTAR INDS INC).

What is NORTHERN TRUST CORP's ROCK position worth?

As of 2026-Q2, NORTHERN TRUST CORP's ROCK position is worth $15.9M.

In 2026-Q2, NORTHERN TRUST CORP increased their ROCK position (+5.8% change in shares).

Based on available 13F filings, NORTHERN TRUST CORP first reported a position in ROCK in 2019-Q1. They have held the position across 30 quarters.

Position history for NORTHERN TRUST CORP's holdings in GIBRALTAR INDS INC

Current Value

$15.9M

Current Shares

353,253

Total Value Change

-$1.8M

Total Shares Change

-84,351

Quarter-by-Quarter History

Quarter	Action	Shares	Change	Value	Weight	Price	Conviction
2026-Q2 Latest	Increased	353,253	+5.8%	$15.9M	0.0%	$45.10	30
2026-Q1	Increased	333,896	+3.6%	$13.3M	0.0%	$43.83	29
2025-Q4	Decreased	322,175	-8.5%	$15.9M	0.0%	$49.95	0
2025-Q3	Increased	352,156	+0.0%	$22.1M	0.0%	$63.49	28
2025-Q2	Decreased	352,106	-4.1%	$20.8M	0.0%	$60.73	0
2025-Q1	Increased	367,325	+0.1%	$21.5M	0.0%	$59.49	28
2024-Q4	Increased	366,987	+9.7%	$21.6M	0.0%	$58.67	31
2024-Q3	Decreased	334,467	-2.0%	$23.4M	0.0%	$70.20	0
2024-Q2	Decreased	341,198	-3.1%	$23.4M	0.0%	$68.55	0
2024-Q1	Decreased	352,091	-5.0%	$28.4M	0.0%	$80.53	0
2023-Q4	Decreased	370,599	-1.7%	$29.3M	0.0%	$78.98	0
2023-Q3	Decreased	377,074	-1.1%	$25.5M	0.0%	$67.51	0
2023-Q2	Increased	381,273	+2.2%	$24M	0.0%	$62.16	29
2023-Q1	Decreased	372,904	-0.1%	$18.1M	0.0%	$47.57	0
2022-Q4	Increased	373,313	+1.8%	$17.1M	0.0%	$45.88	29
2022-Q3	Decreased	366,658	-2.9%	$15M	0.0%	$39.61	0
2022-Q2	Decreased	377,616	-0.9%	$14.6M	0.0%	$38.57	0
2022-Q1	Decreased	381,056	-2.5%	$16.4M	0.0%	$45.63	0
2021-Q4	Decreased	390,875	-2.2%	$26.1M	0.0%	$66.97	0
2021-Q3	Decreased	399,617	-0.6%	$27.8M	0.0%	$68.91	0
2021-Q2	Increased	402,115	+0.5%	$30.7M	0.0%	$75.90	29
2021-Q1	Decreased	399,964	-8.0%	$36.6M	0.0%	$89.48	0
2020-Q4	Decreased	434,648	-3.5%	$31.3M	0.0%	$71.74	0
2020-Q3	Increased	450,627	+9.5%	$29.4M	0.0%	$65.56	32
2020-Q2	Decreased	411,654	-10.3%	$19.8M	0.0%	$47.40	0
2020-Q1	Increased	459,179	+0.3%	$19.7M	0.0%	$42.36	28
2019-Q4	Decreased	457,671	-1.7%	$23.1M	0.0%	$50.43	0
2019-Q3	Increased	465,441	+3.8%	$21.4M	0.0%	$45.90	30
2019-Q2	Increased	448,476	+2.5%	$18.1M	0.0%	$40.36	29
2019-Q1	New	437,604	-	$17.8M	0.0%	$40.61	39