Simplex Trading
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Simplex Trading’s Gibraltar Industries ROCK Stock Holding History

Simplex Trading’s Portfolio ROCK Stock Details ROCK Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q2 		– Sell
-500
Closed -$29K – 9589
2025
Q1 		$29K Buy
+500
New +$31.1K ﹤0.01% 6278
2024
Q4 		– Sell
-900
Closed -$62K – 9467
2024
Q3 		$62K Buy
900
+400
+80% +$27.9K ﹤0.01% 5702
2024
Q2 		$34K Buy
+500
New +$36.4K ﹤0.01% 6458
2023
Q1 		– Sell
-100
Closed -$4K – 9966
2022
Q4 		$4K Buy
+100
New +$4.8K ﹤0.01% 8250
2021
Q4 		– Sell
-4,600
Closed -$353K – 11304
2021
Q3 		$353K Hold
4,600
– – ﹤0.01% 4652
2021
Q2 		$351K Buy
+4,600
New +$380K ﹤0.01% 4716
2020
Q4 		– Sell
-1
Closed -$6K – 8956
2020
Q3 		$6K Buy
+1
New +$59 ﹤0.01% 7044
2020
Q2 		– Sell
-15
Closed -$64K – 8245
2020
Q1 		$64K Sell
15
-372
-96% -$18.6K ﹤0.01% 4883
2019
Q4 		$1.95M Buy
387
+385
+19,250% +$19.3K ﹤0.01% 1500
2019
Q3 		$9K Sell
2
-11
-85% -$460 ﹤0.01% 6307
2019
Q2 		$52K Sell
13
-71
-85% -$2.76K ﹤0.01% 4826
2019
Q1 		$341K Hold
84
– – ﹤0.01% 3059
2018
Q4 		$298K Sell
84
-178
-68% -$6.49K ﹤0.01% 2728
2018
Q3 		$1.19M Buy
262
+231
+745% +$9.99K ﹤0.01% 1712
2018
Q2 		$116K Sell
31
-125
-80% -$4.64K ﹤0.01% 4116
2018
Q1 		$24K Buy
+156
New +$5.42K ﹤0.01% 3182
2017
Q3 		– Sell
-141
Closed -$16K – 6522
2017
Q2 		$16K Sell
141
-8
-5% -$282 ﹤0.01% 3533
2017
Q1 		$15K Sell
149
-84
-36% -$3.52K ﹤0.01% 3582
2016
Q4 		$30K Buy
233
+181
+348% +$7.48K ﹤0.01% 2654
2016
Q3 		$2K Buy
+52
New +$1.9K ﹤0.01% 5026

Other funds holding ROCK

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
AllianceBernstein
AllianceBernstein Nashville, Tennessee $309B AUM 23.92% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Barrow, Hanley, Mewhinney & Strauss
Barrow, Hanley, Mewhinney & Strauss Dallas, Texas $30.5B AUM 29.95% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
Mirae Asset Global ETFs Holdings
Mirae Asset Global ETFs Holdings Causeway Bay, Hong Kong $73.7B AUM 53.56% 1-Year Est. Return

Simplex Trading's ROCK Position: Q3 2025 in Review

Simplex Trading sold out of Gibraltar Industries (ROCK) in Q3 2025, closing a stake of 30 shares — an estimated $1K sold.

Simplex Trading first reported a position in ROCK in Q4 2015 and held it in 24 quarters. The position peaked at $445K in Q4 2019. 266 funds tracked by Wall St. Rank hold ROCK as of Q3 2025.

  • Simplex Trading reported no remaining Gibraltar Industries position as of Q3 2025 after selling out during the quarter.
  • Simplex Trading sold 30 Gibraltar Industries shares in Q3 2025, an estimated $1K.
  • Simplex Trading first reported a position in Gibraltar Industries in Q4 2015 and held it in 24 quarters.
  • Simplex Trading's Gibraltar Industries position peaked at $445K in Q4 2019.
  • 266 funds tracked by Wall St. Rank held Gibraltar Industries as of Q3 2025.

Based on Simplex Trading's 13F filing for Q3 2025, filed 12 Nov 2025.