Simplex Trading
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Simplex Trading’s Research Frontiers REFR Stock Holding History

Simplex Trading’s Portfolio REFR Stock Details REFR Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$305 Buy
+332
New +$363 ﹤0.01% 8794
2024
Q3 		– Sell
-161
Closed -$333 – 9379
2024
Q2 		$0 Sell
161
-2,139
-93% -$3.74K ﹤0.01% 9627
2024
Q1 		$2K Sell
2,300
-1,518
-40% -$1.67K ﹤0.01% 8448
2023
Q4 		$3K Buy
3,818
+3,723
+3,919% +$3.87K ﹤0.01% 8132
2023
Q3 		$0 Sell
95
-5
-5% -$8 ﹤0.01% 9618
2023
Q2 		$0 Buy
+100
New +$162 ﹤0.01% 9767
2021
Q2 		– Sell
-15,113
Closed -$37.6K – 10600
2021
Q1 		$0 Sell
15,113
-639
-4% -$2.48K ﹤0.01% 9825
2020
Q4 		$44K Buy
15,752
+175
+1% +$494 ﹤0.01% 6320
2020
Q3 		$42K Buy
15,577
+907
+6% +$2.63K ﹤0.01% 5778
2020
Q2 		$59K Buy
14,670
+1,046
+8% +$3.88K ﹤0.01% 5338
2020
Q1 		$31K Sell
13,624
-10,351
-43% -$33.1K ﹤0.01% 5601
2019
Q4 		$72K Buy
23,975
+14,254
+147% +$45.7K ﹤0.01% 4854
2019
Q3 		$31K Buy
9,721
+9,113
+1,499% +$34.6K ﹤0.01% 5465
2019
Q2 		$2K Sell
608
-587
-49% -$1.66K ﹤0.01% 6771
2019
Q1 		$2K Buy
+1,195
New +$2.76K ﹤0.01% 6811
2018
Q4 		– Sell
-18
Closed – – 7662
2018
Q3 		$0 Buy
+18
New +$19 ﹤0.01% 7942
2017
Q4 		– Sell
-65
Closed – – 6554
2017
Q3 		$0 Buy
+65
New +$78 ﹤0.01% 6506
2015
Q4 		– Sell
-14,295
Closed -$71.7K – 6006
2015
Q3 		$72K Buy
+14,295
New +$75.9K 0.01% 1688

Other funds holding REFR

MOS
MGO One Seven Beachwood, Ohio $4.98B AUM 22.72% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Focus Partners Wealth
Focus Partners Wealth Boston, Massachusetts $89.9B AUM 20.5% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
VFT
Vanguard Fiduciary Trust Malvern, Pennsylvania $396B AUM
Susquehanna International Group
Susquehanna International Group Bala Cynwyd, Pennsylvania $893B AUM 36.07% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
SRC
Shufro Rose & Co New York $1.47B AUM 19.38% 1-Year Est. Return
Renaissance Technologies
Renaissance Technologies New York $63.9B AUM 45.56% 1-Year Est. Return

Simplex Trading's REFR Position: Q1 2026 in Review

Simplex Trading opened a new position in Research Frontiers (REFR) in Q1 2026: 332 shares worth $305. The stake represents ﹤0.01% of the portfolio and ranks #8794 among its holdings. This is a return to the name: Simplex Trading previously reported a position in REFR as recently as Q2 2024.

Simplex Trading first reported a position in REFR in Q3 2015 and has held it in 18 quarters since. The position peaked at $72K in Q4 2019. 35 funds tracked by Wall St. Rank hold REFR as of Q1 2026.

  • Simplex Trading held 332 shares of Research Frontiers worth $305 as of Q1 2026.
  • Research Frontiers was a new Simplex Trading position in Q1 2026.
  • Research Frontiers made up ﹤0.01% of Simplex Trading's portfolio in Q1 2026, its #8794 holding.
  • Simplex Trading first reported a position in Research Frontiers in Q3 2015 and has held it in 18 quarters since.
  • Simplex Trading's Research Frontiers position peaked at $72K in Q4 2019.
  • 35 funds tracked by Wall St. Rank held Research Frontiers as of Q1 2026.

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