Citigroup’s Research Frontiers REFR Stock Holding History

Citigroup’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	$395	Buy	438 +437	+43,700%	+$478	﹤0.01%	5548
2025 Q4	$1	Buy	+1	New	+$2	﹤0.01%	5986
2021 Q3	–	Sell	-843	Closed	-$2K	–	6211
2021 Q2	$2K	Sell	843 -913	-52%	-$2.27K	﹤0.01%	5985
2021 Q1	$5K	Sell	1,756 -3,243	-65%	-$12.6K	﹤0.01%	5903
2020 Q4	$14K	Buy	4,999 +3,724	+292%	+$10.5K	﹤0.01%	6837
2020 Q3	$3K	Sell	1,275 -3,036	-70%	-$8.8K	﹤0.01%	7228
2020 Q2	$18K	Sell	4,311 -400	-8%	-$1.48K	﹤0.01%	6706
2020 Q1	$11K	Buy	+4,711	New	+$15.1K	﹤0.01%	7010
2017 Q1	–	Sell	-100	Closed	–	–	7308
2016 Q4	$0	Buy	+100	New	+$207	﹤0.01%	7298
2016 Q2	–	Sell	-28	Closed	–	–	7368
2016 Q1	$0	Buy	+28	New	+$126	﹤0.01%	7712
2014 Q4	–	Sell	-25	Closed	–	–	7272
2014 Q3	$0	Buy	+25	New	+$131	﹤0.01%	7252
2014 Q2	–	Sell	-120	Closed	-$1K	–	7280
2014 Q1	$1K	Buy	+120	New	+$760	﹤0.01%	6886

Other funds holding REFR

MOS

MGO One Seven Beachwood, Ohio $4.98B AUM 22.72% 1-Year Est. Return

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

Focus Partners Wealth Boston, Massachusetts $89.9B AUM 20.5% 1-Year Est. Return

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 Bala Cynwyd, Pennsylvania $893B AUM 36.07% 1-Year Est. Return

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 New York $63.9B AUM 45.56% 1-Year Est. Return

Citigroup's REFR Position: Q1 2026 in Review

Citigroup increased its Research Frontiers (REFR) stake by 43,700% in Q1 2026, buying an estimated $478 and bringing the position to 438 shares worth $395. The position accounts for ﹤0.01% of the portfolio, ranked #5548.

Citigroup first reported a position in REFR in Q1 2014 and has held it in 12 quarters since. The position peaked at $18K in Q2 2020. 35 funds tracked by Wall St. Rank hold REFR as of Q1 2026.

Citigroup held 438 shares of Research Frontiers worth $395 as of Q1 2026.
Citigroup bought 437 Research Frontiers shares in Q1 2026, an estimated $478.
Research Frontiers made up ﹤0.01% of Citigroup's portfolio in Q1 2026, its #5548 holding.
Citigroup first reported a position in Research Frontiers in Q1 2014 and has held it in 12 quarters since.
Citigroup's Research Frontiers position peaked at $18K in Q2 2020.
35 funds tracked by Wall St. Rank held Research Frontiers as of Q1 2026.

Based on Citigroup's 13F filing for Q1 2026, filed 11 May 2026.