Robert E. Robotti

Holdings History for GIBRALTAR INDUSTRIES, INC. - Common Stock (ROCK)

Symbol: ROCK on Nasdaq
Investment type: Equity / Common Stock

Shares, Excluding Options vs Price

Value, Excluding Options

Holdings date	Weight	Change	Value $	Shares	Change	Activity %	Price	All Holders
31 Dec 2019		-0.36%	$0	0	-21,733	-100%	$53.15	Q4 2019
30 Sep 2019	0.36%	-0.19%	$998,000	21,733	-11,601	-35%	$45.92	Q3 2019
30 Jun 2019	0.47%	-0.02%	$1,345,000	33,334	-1,350	-3.9%	$40.35	Q2 2019
31 Mar 2019	0.5%	-0.01%	$1,409,000	34,684	-745	-2.1%	$40.62	Q1 2019
31 Dec 2018	0.49%	0%	$1,261,000	35,429	0		$35.59	Q4 2018
30 Sep 2018	0.43%	-0.04%	$1,616,000	35,429	-3,130	-8.1%	$45.61	Q3 2018
30 Jun 2018	0.38%	-0.24%	$1,446,000	38,559	-24,105	-38%	$37.50	Q2 2018
31 Mar 2018	0.59%	-0.32%	$2,121,000	62,664	-34,052	-35%	$33.85	Q1 2018
31 Dec 2017	0.83%	-0.04%	$3,192,000	96,716	-5,132	-5%	$33.00	Q4 2017
30 Sep 2017	0.87%	-0.03%	$3,173,000	101,848	-3,560	-3.4%	$31.15	Q3 2017
30 Jun 2017	1.2%	+0.03%	$3,652,000	105,408	+2,280	+2.2%	$34.65	Q2 2017
31 Mar 2017	1.3%	-0.03%	$4,249,000	103,128	-2,280	-2.2%	$41.20	Q1 2017
31 Dec 2016	1.3%	-0.02%	$4,390,000	105,408	-1,225	-1.1%	$41.65	Q4 2016
30 Sep 2016	1.4%	-0.49%	$3,961,000	106,633	-38,660	-27%	$37.15	Q3 2016
30 Jun 2016	1.7%	-0.13%	$4,587,000	145,293	-11,150	-7.1%	$31.57	Q2 2016
31 Mar 2016	1.6%	-0.41%	$4,474,000	156,443	-39,250	-20%	$28.60	Q1 2016
31 Dec 2015	2%	-0.04%	$4,978,000	195,693	-3,700	-1.9%	$25.44	Q4 2015
30 Sep 2015	2.4%	0%	$3,659,000	199,393	0		$18.35	Q3 2015
30 Jun 2015	2.3%	0%	$4,062,000	199,393	0		$20.37	Q2 2015
31 Mar 2015	1.9%	-0.31%	$3,272,000	199,393	-32,448	-14%	$16.41	Q1 2015
31 Dec 2014	2.1%	-0.01%	$3,770,000	231,841	-1,225	-0.53%	$16.26	Q4 2014
30 Sep 2014	1.6%	-0.22%	$3,191,000	233,066	-31,978	-12%	$13.69	Q3 2014
30 Jun 2014	1.6%	-0.23%	$4,111,000	265,044	-38,690	-13%	$15.51	Q2 2014
31 Mar 2014	2.2%	-0.28%	$5,731,000	303,734	-39,204	-11%	$18.87	Q1 2014
31 Dec 2013	2.6%	0%	$6,375,000	342,938	0		$18.59	Q4 2013

* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.