Jane Street’s Firefly Neuroscience AIFF Stock Holding History

Jane Street’s Portfolio AIFF Stock Details AIFF Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$82.1K	Sell	67,829 -112,392	-62%	-$196K	﹤0.01%	10710
2026 Q1	$393K	Buy	180,221 +119,906	+199%	+$149K	﹤0.01%	8594
2025 Q4	$52.8K	Buy	+60,315	New	+$112K	﹤0.01%	10489
2023 Q3	–	Sell	-366	Closed	-$3.35K	–	9532
2023 Q2	$3.35K	Buy	+366	New	+$4.15K	﹤0.01%	8520
2022 Q2	–	Sell	-603	Closed	-$96K	–	11122
2022 Q1	$96K	Buy	+603	New	+$81.5K	﹤0.01%	9476

Other funds holding AIFF

Murchinson Toronto, Ontario, Canada $725M AUM 82.02% 1-Year Est. Return

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

BFM

Boothbay Fund Management New York $7.6B AUM 109.3% 1-Year Est. Return

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

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

UBS Group Zurich, Switzerland $786B AUM 40.34% 1-Year Est. Return

Vanguard Fiduciary Trust Malvern, Pennsylvania $454B AUM

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

CCA

Cygnus Capital Advisors Atlanta, Georgia $147M AUM

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

Jane Street's AIFF Position: Q2 2026 in Review

Jane Street reduced its Firefly Neuroscience (AIFF) stake by 62% in Q2 2026, selling an estimated $196K and leaving 67,829 shares worth $82.1K. The position accounts for ﹤0.01% of the portfolio, ranked #10710.

Jane Street first reported a position in AIFF in Q1 2022 and has held it in 5 quarters since. The position peaked at $393K in Q1 2026. 23 funds tracked by Wall St. Rank hold AIFF as of Q2 2026.

Jane Street held 67,829 shares of Firefly Neuroscience worth $82.1K as of Q2 2026.
Jane Street sold 112,392 Firefly Neuroscience shares in Q2 2026, an estimated $196K.
Firefly Neuroscience made up ﹤0.01% of Jane Street's portfolio in Q2 2026, its #10710 holding.
Jane Street first reported a position in Firefly Neuroscience in Q1 2022 and has held it in 5 quarters since.
Jane Street's Firefly Neuroscience position peaked at $393K in Q1 2026.
23 funds tracked by Wall St. Rank held Firefly Neuroscience as of Q2 2026.

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