Simplex Trading
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Simplex Trading’s Protolabs PRLB Stock Holding History

Simplex Trading’s Portfolio PRLB Stock Details PRLB Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q3 		– Sell
-100
Closed -$4K – 9838
2025
Q2 		$4K Sell
100
-700
-88% -$26.1K ﹤0.01% 7881
2025
Q1 		$28K Hold
800
– – ﹤0.01% 6305
2024
Q4 		$31K Sell
800
-1,900
-70% -$68.3K ﹤0.01% 6323
2024
Q3 		$79K Sell
2,700
-400
-13% -$12.2K ﹤0.01% 5455
2024
Q2 		$95K Sell
3,100
-100
-3% -$3.17K ﹤0.01% 5429
2024
Q1 		$114K Hold
3,200
– – ﹤0.01% 5452
2023
Q4 		$124K Buy
3,200
+1,800
+129% +$58.3K ﹤0.01% 5157
2023
Q3 		$36K Buy
1,400
+1,300
+1,300% +$39.2K ﹤0.01% 6103
2023
Q2 		$3K Sell
100
-200
-67% -$6.37K ﹤0.01% 8261
2023
Q1 		$9K Sell
300
-500
-63% -$15.5K ﹤0.01% 7641
2022
Q4 		$20K Buy
800
+700
+700% +$20.8K ﹤0.01% 6881
2022
Q3 		$3K Sell
100
-3,800
-97% -$165K ﹤0.01% 9138
2022
Q2 		$186K Buy
3,900
+300
+8% +$13.9K ﹤0.01% 4709
2022
Q1 		$190K Sell
3,600
-10,500
-74% -$552K ﹤0.01% 5226
2021
Q4 		$724K Sell
14,100
-9,400
-40% -$555K ﹤0.01% 3318
2021
Q3 		$2.17M Hold
23,500
– – ﹤0.01% 2043
2021
Q2 		$2.16M Buy
23,500
+23,322
+13,102% +$2.3M ﹤0.01% 2066
2021
Q1 		$2.17M Buy
178
+117
+192% +$19.5K ﹤0.01% 1527
2020
Q4 		$935K Buy
61
+41
+205% +$5.78K ﹤0.01% 2651
2020
Q3 		$259K Buy
20
+6
+43% +$789 ﹤0.01% 3785
2020
Q2 		$157K Buy
14
+10
+250% +$1.03K ﹤0.01% 4281
2020
Q1 		$30K Sell
4
-88
-96% -$8.15K ﹤0.01% 5626
2019
Q4 		$934K Buy
92
+91
+9,100% +$9.02K ﹤0.01% 2151
2019
Q3 		$10K Sell
1
-64
-98% -$6.53K ﹤0.01% 6257
2019
Q2 		$754K Sell
65
-7
-10% -$753 ﹤0.01% 2180
2019
Q1 		$757K Buy
72
+1
+1% +$112 ﹤0.01% 2236
2018
Q4 		$800K Sell
71
-45
-39% -$5.55K ﹤0.01% 1821
2018
Q3 		$1.88M Buy
116
+88
+314% +$12.4K 0.01% 1307
2018
Q2 		$333K Sell
28
-173
-86% -$21.2K ﹤0.01% 2896
2018
Q1 		$17K Buy
+201
New +$22.7K ﹤0.01% 3517
2017
Q3 		– Sell
-59
Closed -$2K – 6480
2017
Q2 		$2K Buy
59
+28
+90% +$1.69K ﹤0.01% 5320
2017
Q1 		$10K Buy
31
+8
+35% +$424 ﹤0.01% 3986
2016
Q4 		$6K Buy
23
+18
+360% +$944 ﹤0.01% 4214
2016
Q3 		$4K Sell
5
-35
-88% -$2.01K ﹤0.01% 4504
2016
Q2 		$9K Sell
40
-78
-66% -$5.21K ﹤0.01% 3701
2016
Q1 		$18K Buy
118
+19
+19% +$1.23K ﹤0.01% 2910
2015
Q4 		$33K Buy
99
+46
+87% +$2.97K ﹤0.01% 2271
2015
Q3 		$20K Sell
53
-54
-50% -$3.85K ﹤0.01% 2806
2015
Q2 		$35K Buy
107
+86
+410% +$6.07K ﹤0.01% 1966
2015
Q1 		$3K Sell
21
-1
-5% -$68 ﹤0.01% 3890
2014
Q4 		$5K Buy
+22
New +$1.45K ﹤0.01% 3108

Other funds holding PRLB

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
DGI
Disciplined Growth Investors Minneapolis, Minnesota $4.89B AUM 33.85% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
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
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
ACM
American Capital Management New York $1.86B AUM 20.23% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
Renaissance Technologies
Renaissance Technologies New York $63.9B AUM 45.56% 1-Year Est. Return
RCMNY
Rubric Capital Management (New York) New York $9.44B AUM 68.42% 1-Year Est. Return

Simplex Trading's PRLB Position: Q1 2026 in Review

Simplex Trading opened a new position in Protolabs (PRLB) in Q1 2026: 10,779 shares worth $615K. The stake represents ﹤0.01% of the portfolio and ranks #3036 among its holdings. This is a return to the name: Simplex Trading previously reported a position in PRLB as recently as Q3 2025.

Simplex Trading first reported a position in PRLB in Q1 2015 and has held it in 24 quarters since. The position peaked at $1.08M in Q3 2021. 262 funds tracked by Wall St. Rank hold PRLB as of Q1 2026.

  • Simplex Trading held 10,779 shares of Protolabs worth $615K as of Q1 2026.
  • Protolabs was a new Simplex Trading position in Q1 2026.
  • Protolabs made up ﹤0.01% of Simplex Trading's portfolio in Q1 2026, its #3036 holding.
  • Simplex Trading first reported a position in Protolabs in Q1 2015 and has held it in 24 quarters since.
  • Simplex Trading's Protolabs position peaked at $1.08M in Q3 2021.
  • 262 funds tracked by Wall St. Rank held Protolabs as of Q1 2026.

Based on Simplex Trading's 13F filing for Q1 2026, filed 14 May 2026.