Firefly Neuroscience, Inc. (AIFF) Ownership
AIFF ownership summary
as of October 18, 2026- Institutions
- 10.5% of shares outstanding
- Insiders
- 9.37% of shares outstanding
- Shares outstanding
- 15.7M
- Float
- 14.2M shares available to trade
- Short interest
- 7.42% 1.1M shares short
- Days to cover
- 0.15 short interest up 265.0% vs prior month
- Institutions 10.46%
- Insiders 9.37%
- Other investors 80.17%
AIFF top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Murchinson Ltd. | 4.14% | 650K | $663,000 | +650,000 (0.0%) | June 30, 2026 |
| 2 | BlackRock Inc | 1.19% | 187K | $190,911 | +17,806 (+10.5%) | June 30, 2026 |
| 3 | BOOTHBAY FUND MANAGEMENT, LLC | 1.14% | 179K | $182,325 | +178,750 (0.0%) | June 30, 2026 |
| 4 | Geode Capital Management, LLC | 0.77% | 122K | $123,952 | −34,786 (−22.3%) | June 30, 2026 |
| 5 | Vanguard Capital Management, LLC | 0.71% | 112K | $114,148 | — | June 30, 2026 |
| 6 | Jane Street Group LLC | 0.43% | 68K | $69,186 | −112,392 (−62.4%) | June 30, 2026 |
| 7 | UBS Group AG | 0.38% | 59K | $60,301 | −73,076 (−55.3%) | June 30, 2026 |
| 8 | Vanguard Fiduciary Trust Co | 0.33% | 51K | $52,013 | — | June 30, 2026 |
| 9 | State Street Corp | 0.30% | 46K | $47,225 | — | June 30, 2026 |
| 10 | Cygnus Capital Advisors, LLC | 0.28% | 45K | $45,443 | +24,513 (+122.3%) | June 30, 2026 |
| 11 | Northern Trust Corp | 0.21% | 33K | $34,164 | +17,730 (+112.5%) | June 30, 2026 |
| 12 | Virtu Financial LLC | 0.17% | 27K | $27,088 | +26,557 (0.0%) | June 30, 2026 |
| 13 | Squarepoint Ops LLC | 0.09% | 14K | $14,576 | +14,290 (0.0%) | June 30, 2026 |
| 14 | Waldron, LP | 0.08% | 12K | $12,240 | — | June 30, 2026 |
| 15 | Tower Research Capital LLC | 0.04% | 5,926 | $6,045 | +3,194 (+116.9%) | June 30, 2026 |
| 16 | Vanguard Global Advisers, LLC | 0.02% | 2,768 | $2,823 | — | June 30, 2026 |
| 17 | Citigroup Inc | 0.01% | 2,091 | $2,133 | −26,572 (−92.7%) | June 30, 2026 |
| 18 | Advisor Group Holdings, Inc. | 0.01% | 1,458 | $1,487 | — | June 30, 2026 |
| 19 | Barclays PLC | <0.01% | 312 | $318 | +312 (0.0%) | June 30, 2026 |
| 20 | Royal Bank of Canada | <0.01% | 41 | $42 | +41 (0.0%) | March 31, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 10 holders added 933K shares and 4 cut 247K.
AIFF top mutual fund and ETF holders
7 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Fidelity Extended Market Index | 0.38% | 60K | $61,331 | −323 (−0.5%) | August 31, 2026 |
| 2 | iShares Micro-Cap ETF | 0.29% | 45K | $46,330 | −313 (−0.7%) | September 30, 2026 |
| 3 | Fidelity Total Market Index | 0.12% | 20K | $20,011 | — | August 31, 2026 |
| 4 | Fidelity Series Total Market Index | 0.10% | 15K | $15,662 | — | August 31, 2026 |
| 5 | Fidelity Nasdaq Composite Index | 0.02% | 3,300 | $3,366 | — | August 31, 2026 |
| 6 | 1290 VT Micro Cap K | 0.02% | 2,850 | $2,907 | — | August 31, 2026 |
| 7 | Vanguard U.S. Eq Idx £ Acc | 0.02% | 2,768 | $2,823 | — | August 31, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
AIFF insider transactions
latest 10| Date | Name | Transaction | Price | Shares | Value |
|---|---|---|---|---|---|
| 2025-10-22 | Windsor Private Capital Lp | Sell | $2.07 | 78,031 | $161,524 |
| 2025-10-21 | Windsor Private Capital Lp | Sell | $2.40 | 19,222 | $46,133 |
| 2025-10-20 | Windsor Private Capital Lp | Sell | $2.46 | 33,500 | $82,410 |
| 2025-10-17 | Windsor Private Capital Lp | Sell | $2.55 | 45,036 | $114,842 |
| 2025-10-16 | Windsor Private Capital Lp | Sell | $2.65 | 40,139 | $106,368 |
| 2025-10-15 | Windsor Private Capital Lp | Sell | $2.74 | 17,500 | $47,950 |
| 2025-10-14 | Windsor Private Capital Lp | Sell | $2.74 | 29,500 | $80,830 |
| 2025-10-13 | Windsor Private Capital Lp | Sell | $2.65 | 32,136 | $85,160 |
| 2025-10-10 | Windsor Private Capital Lp | Sell | $2.70 | 74,810 | $201,987 |
| 2025-10-09 | Windsor Private Capital Lp | Sell | $2.94 | 30,126 | $88,570 |
Reported trades by company officers, directors and other filers (including disclosures by members of Congress where EODHD lists them). "—" where the filing gives no share count.
AIFF shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns AIFF
Institutional investors own 10.5% of Firefly Neuroscience's shares and insiders 9.37%. The largest holder is Murchinson Ltd. with 4.14% of the shares (650K), as of June 30, 2026. Among the top 20 institutions, 10 added shares and 4 reduced their stake in the latest filings. Short interest is 7.42% of the float, or 0.15 days of average trading volume. The share count rose 71.5% since 2022.
Related: AIFF key metrics. See the AIFF stock overview for the latest quote and news.
AIFF ownership FAQ
Who owns the most Firefly Neuroscience stock?
The largest shareholders of Firefly Neuroscience are Murchinson Ltd. (4.14%), BlackRock Inc (1.19%), BOOTHBAY FUND MANAGEMENT, LLC (1.14%), Geode Capital Management, LLC (0.77%), Vanguard Capital Management, LLC (0.71%).
What percentage of Firefly Neuroscience is owned by institutions?
Institutions hold 10.5% of Firefly Neuroscience's shares outstanding; insiders hold 9.37%.
Which funds own Firefly Neuroscience?
The largest fund holders of Firefly Neuroscience are Fidelity Extended Market Index (0.38%), iShares Micro-Cap ETF (0.29%), Fidelity Total Market Index (0.12%), Fidelity Series Total Market Index (0.10%), Fidelity Nasdaq Composite Index (0.02%).
What is Firefly Neuroscience's short interest?
1.1M shares of Firefly Neuroscience were sold short, 7.42% of the float; at the average daily volume it would take 0.15 days to cover.
Are insiders buying or selling Firefly Neuroscience?
Of the latest 10 reported insider transactions in Firefly Neuroscience (since October 9, 2025), 0 were purchases and 10 were sales.
How many shares of Firefly Neuroscience are outstanding?
Firefly Neuroscience has 15.7M shares outstanding, of which 14.2M are in the public float.