Vanguard Group’s Firefly Neuroscience AIFF Stock Holding History

Vanguard Group’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
2025 Q4	$440K	Hold	503,071	–	–	﹤0.01%	3966
2025 Q3	$1.46M	Buy	503,071 +401,085	+393%	+$1.14M	﹤0.01%	3666
2025 Q2	$289K	Hold	101,986	–	–	﹤0.01%	4028
2025 Q1	$401K	Buy	101,986 +36,191	+55%	+$166K	﹤0.01%	3929
2024 Q4	$174K	Buy	+65,795	New	+$204K	﹤0.01%	4122
2024 Q3	–	Sell	-3,698	Closed	-$23K	–	4390
2024 Q2	$23K	Hold	3,698	–	–	﹤0.01%	4352
2024 Q1	$38.4K	Hold	3,698	–	–	﹤0.01%	4339
2023 Q4	$18.7K	Buy	3,698 +2,401	+185%	+$15.6K	﹤0.01%	4450
2023 Q3	$10.1K	Hold	1,297	–	–	﹤0.01%	4521
2023 Q2	$11.9K	Sell	1,297 -924	-42%	-$10.5K	﹤0.01%	4531
2023 Q1	$19.3K	Buy	2,221 +647	+41%	+$12.7K	﹤0.01%	4531
2022 Q4	$22.7K	Buy	1,574 +7	+0.4%	+$163	﹤0.01%	4489
2022 Q3	$45K	Buy	1,567 +334	+27%	+$12.3K	﹤0.01%	4554
2022 Q2	$50K	Buy	1,233 +724	+142%	+$69.9K	﹤0.01%	4586
2022 Q1	$81K	Buy	+509	New	+$68.8K	﹤0.01%	4603

Other funds holding AIFF

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

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

Jane Street New York $777B AUM 61.18% 1-Year Est. Return

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

ASN

Advisory Services Network Atlanta, Georgia $7.52B AUM 29.01% 1-Year Est. Return

UBS Group Zurich, Switzerland $666B AUM 30.12% 1-Year Est. Return

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

Northern Trust Chicago, Illinois $757B AUM 28.64% 1-Year Est. Return

WPW

Waldron Private Wealth Bridgeville, Pennsylvania $2.89B AUM 23.18% 1-Year Est. Return

TRCT

Tower Research Capital (TRC) New York $3.85B AUM 32.11% 1-Year Est. Return

Vanguard Group's AIFF Position: Q4 2025 in Review

Vanguard Group held its Firefly Neuroscience (AIFF) position steady in Q4 2025 at 503,071 shares worth $440K. The position accounts for ﹤0.01% of the portfolio, ranked #3966.

Vanguard Group first reported a position in AIFF in Q1 2022 and has held it in 15 quarters since. The position peaked at $1.46M in Q3 2025. 16 funds tracked by Wall St. Rank hold AIFF as of Q4 2025.

Vanguard Group held 503,071 shares of Firefly Neuroscience worth $440K as of Q4 2025.
Vanguard Group left its Firefly Neuroscience share count unchanged in Q4 2025.
Firefly Neuroscience made up ﹤0.01% of Vanguard Group's portfolio in Q4 2025, its #3966 holding.
Vanguard Group first reported a position in Firefly Neuroscience in Q1 2022 and has held it in 15 quarters since.
Vanguard Group's Firefly Neuroscience position peaked at $1.46M in Q3 2025.
16 funds tracked by Wall St. Rank held Firefly Neuroscience as of Q4 2025.

Based on Vanguard Group's 13F filing for Q4 2025, filed 29 Jan 2026.