Jane Street’s Research Frontiers REFR Stock Holding History

Jane Street’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 Q2	$6.58K	Buy	12,649 +1,074	+9%	+$863	﹤0.01%	11334
2026 Q1	$10.6K	Sell	11,575 -3,516	-23%	-$3.85K	﹤0.01%	11298
2025 Q4	$19.8K	Buy	+15,091	New	+$25.5K	﹤0.01%	10733
2023 Q4	–	Sell	-28,717	Closed	-$31K	–	9703
2023 Q3	$31K	Sell	28,717 -30,118	-51%	-$45.6K	﹤0.01%	8242
2023 Q2	$94.1K	Buy	+58,835	New	+$95.1K	﹤0.01%	8029
2022 Q4	–	Sell	-18,577	Closed	-$40K	–	9973
2022 Q3	$40K	Buy	+18,577	New	+$38K	﹤0.01%	9008
2020 Q3	–	Sell	-36,211	Closed	-$147K	–	7789
2020 Q2	$147K	Buy	+36,211	New	+$134K	﹤0.01%	6564
2020 Q1	–	Sell	-12,662	Closed	-$38K	–	5857
2019 Q4	$38K	Buy	+12,662	New	+$40.6K	﹤0.01%	4930

Other funds holding REFR

MOS

MGO One Seven Beachwood, Ohio $6.06B AUM 28.9% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Focus Partners Wealth Boston, Massachusetts $97.6B AUM 29.43% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Vanguard Fiduciary Trust Malvern, Pennsylvania $454B AUM

Susquehanna International Group Bala Cynwyd, Pennsylvania $1.28T AUM 58.89% 1-Year Est. Return

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

SRC

Shufro Rose & Co New York $1.74B AUM 34.09% 1-Year Est. Return

Northern Trust Chicago, Illinois $860B AUM 41.15% 1-Year Est. Return

Jane Street's REFR Position: Q2 2026 in Review

Jane Street increased its Research Frontiers (REFR) stake by 9.3% in Q2 2026, buying an estimated $863 and bringing the position to 12,649 shares worth $6.58K. The position accounts for ﹤0.01% of the portfolio, ranked #11334.

Jane Street first reported a position in REFR in Q4 2019 and has held it in 8 quarters since. The position peaked at $147K in Q2 2020. 34 funds tracked by Wall St. Rank hold REFR as of Q2 2026.

Jane Street held 12,649 shares of Research Frontiers worth $6.58K as of Q2 2026.
Jane Street bought 1,074 Research Frontiers shares in Q2 2026, an estimated $863.
Research Frontiers made up ﹤0.01% of Jane Street's portfolio in Q2 2026, its #11334 holding.
Jane Street first reported a position in Research Frontiers in Q4 2019 and has held it in 8 quarters since.
Jane Street's Research Frontiers position peaked at $147K in Q2 2020.
34 funds tracked by Wall St. Rank held Research Frontiers as of Q2 2026.

Based on Jane Street's 13F filing for Q2 2026, filed 14 Aug 2026.