Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in KTTA held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | JANUS HENDERSON GROUP PLC | 2.1M | $1.6M | 0.0% | 28.218% | 0.00% |
| 2 | Squadron Capital Management LLC | 2.1M | $1.6M | 0.0% | 28.218% | 0.65% |
| 3 | ADAGE CAPITAL PARTNERS GP, L.L.C. | 2.1M | $1.6M | 0.0% | 28.218% | 0.00% |
| 4 | Vivo Capital, LLC | 2.1M | $1.6M | 0.0% | 28.218% | 0.13% |
| 5 | AMERIPRISE FINANCIAL INC | 1.4M | $1.0M | -30.0% | 18.152% | 0.00% |
| 6 | Cable Car Capital, LP | 1.2M | $895K | +141.3% | 16.210% | 0.31% |
| 7 | Stonepine Capital Management, LLC | 831K | $617K | +202.2% | 11.170% | 0.49% |
| 8 | AdvisorShares Investments LLC | 338K | $250K | +10.8% | 4.535% | 0.05% |
| 9 | Persistent Asset Partners Ltd | 291K | $216K | 0.0% | 3.904% | 0.10% |
| 10 | GEODE CAPITAL MANAGEMENT, LLC | 104K | $77K | +90.8% | 1.397% | 0.00% |
| 11 | RENAISSANCE TECHNOLOGIES LLC | 93K | $69K | — | 1.255% | 0.00% |
| 12 | VANGUARD CAPITAL MANAGEMENT LLC | 54K | $40K | — | 0.723% | 0.00% |
| 13 | VANGUARD FIDUCIARY TRUST CO | 44K | $33K | — | 0.589% | 0.00% |
| 14 | XTX Topco Ltd | 34K | $25K | +62.4% | 0.454% | 0.00% |
| 15 | UBS Group AG | 26K | $19K | +97.2% | 0.351% | 0.00% |
| 16 | TWO SIGMA INVESTMENTS, LP | 21K | $16K | -56.8% | 0.283% | 0.00% |
| 17 | NORTHERN TRUST CORP | 19K | $14K | -31.0% | 0.260% | 0.00% |
| 18 | Hurley Capital, LLC | 4K | $3K | 0.0% | 0.050% | 0.00% |
| 19 | Tower Research Capital LLC (TRC) | 2K | $1K | -37.1% | 0.025% | 0.00% |
| 20 | SBI Securities Co., Ltd. | 1K | $780 | 0.0% | 0.014% | 0.00% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). “% of Fund” shows how much of that investor’s total 13F portfolio is invested in KTTA — a direct measure of their conviction.
Filings activity in KTTA during Q1 2026, grouped by how each filer changed its position.
8 quarters of 13F filings · Δ columns show change vs prior quarter
| Quarter | Inst. Holders | Δ Holders | Ownership % | Δ Ownership | Total 13F Value | Δ Value |
|---|---|---|---|---|---|---|
| Q1 2026 | 20 | 23% | 199.99% | +0.00 pp | $10M | 43% |
| Q4 2025 | 26 | +37% | 199.99% | +190.52 pp | $17M | +3907% |
| Q3 2025 | 19 | +58% | 9.47% | +4.55 pp | $0M | +92% |
| Q2 2025 | 12 | +33% | 4.92% | +2.67 pp | $0M | +119% |
| Q1 2025 | 9 | +13% | 2.25% | 3.28 pp | $0M | 59% |
| Q4 2024 | 8 | +14% | 5.53% | +4.42 pp | $0M | +398% |
| Q3 2024 | 7 | 13% | 1.11% | 2.34 pp | $0M | 68% |
| Q2 2024 | 8 | — | 3.45% | — | $0M | — |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Δ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying KTTA stock.
Based on Q1 2026 13F filings, institutional ownership of Pasithea Therapeutics Corp. stands at 200.0%, held across 20 reporting institutions.
JANUS HENDERSON GROUP PLC is the largest reported institutional holder of KTTA, with approximately 2,100,000 shares worth $0.00B as of Q1 2026.
Yes — 2 widely-followed marquee investors appear among the top 25 institutional holders of KTTA, including RENAISSANCE TECHNOLOGIES LLC, TWO SIGMA INVESTMENTS, LP.
Our composite Smart Money Score for KTTA is 44 out of 100 (Neutral). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
3 institutions opened new positions in KTTA during Q1 2026, while 9 fully exited. 4 added to existing positions and 13 trimmed.
KTTA institutional ownership rose by 0.00 percentage points quarter-over-quarter, with a net change of -6 holders.
The top 10 institutions account for 97.7% of all reported 13F value in KTTA, and the top 25 account for 100.0%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
Pasithea Therapeutics Corp. (KTTA) Institutional Ownership