Instil Bio, Inc. (TIL) Ownership
TIL ownership summary
as of October 18, 2026- Institutions
- 62.5% of shares outstanding
- Insiders
- 6.56% of shares outstanding
- Shares outstanding
- 6.8M
- Float
- 3.7M shares available to trade
- Short interest
- 3.95% 159K shares short
- Days to cover
- 10.88 short interest down 1.7% vs prior month
- Institutions 62.50%
- Insiders 6.56%
- Other investors 30.94%
TIL top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | BML Capital Management LLC | 9.52% | 646K | $3.8M | — | June 30, 2026 |
| 2 | Cpmg Inc | 6.06% | 411K | $2.4M | — | March 31, 2026 |
| 3 | Vivo Capital, LLC | 4.32% | 293K | $1.7M | — | June 30, 2026 |
| 4 | Kalehua Capital Management LLC | 2.94% | 199K | $1.2M | −123,679 (−38.3%) | June 30, 2026 |
| 5 | UBS Group AG | 2.62% | 177K | $1.0M | +171,045 (+2,681.8%) | June 30, 2026 |
| 6 | Vanguard Capital Management, LLC | 2.41% | 164K | $967,692 | −10,845 (−6.2%) | June 30, 2026 |
| 7 | Millennium Management LLC | 1.98% | 135K | $795,338 | +1,629 (+1.2%) | June 30, 2026 |
| 8 | BlackRock Inc | 0.82% | 56K | $328,029 | +3,486 (+6.7%) | June 30, 2026 |
| 9 | Renaissance Technologies Corp | 0.74% | 50K | $297,273 | −8,800 (−14.9%) | June 30, 2026 |
| 10 | Delaware Management Holdings Inc | 0.74% | 50K | $295,500 | — | June 30, 2026 |
| 11 | Jacobs Levy Equity Management, Inc. | 0.63% | 43K | $254,431 | +43,051 (0.0%) | June 30, 2026 |
| 12 | Geode Capital Management, LLC | 0.62% | 42K | $249,603 | −6,777 (−13.8%) | June 30, 2026 |
| 13 | LPL Financial Corp | 0.47% | 32K | $189,563 | +12 (+0.0%) | June 30, 2026 |
| 14 | Citadel Advisors Llc | 0.45% | 31K | $181,076 | −7,923 (−20.5%) | June 30, 2026 |
| 15 | Vanguard Fiduciary Trust Co | 0.34% | 23K | $134,588 | +148 (+0.7%) | June 30, 2026 |
| 16 | State Street Corp | 0.26% | 18K | $103,986 | — | June 30, 2026 |
| 17 | Americana Partners, LLC | 0.24% | 16K | $95,600 | — | June 30, 2026 |
| 18 | Dimensional Fund Advisors, Inc. | 0.23% | 16K | $93,148 | −4,214 (−21.1%) | June 30, 2026 |
| 19 | Morgan Stanley - Brokerage Accounts | 0.18% | 12K | $70,530 | −7,887 (−39.8%) | June 30, 2026 |
| 20 | Vanguard Global Advisers, LLC | 0.02% | 1,470 | $8,688 | — | June 30, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 6 holders added 219K shares and 7 cut 170K.
TIL top mutual fund and ETF holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Vanguard MStar Total Stk Mkt Idx Invest | 1.75% | 119K | $703,243 | — | August 31, 2026 |
| 2 | Nomura Healthcare Fund Class I | 0.74% | 50K | $295,500 | — | August 31, 2026 |
| 3 | Fidelity Extended Market Index | 0.27% | 19K | $109,737 | −100 (−0.5%) | August 31, 2026 |
| 4 | iShares Micro-Cap ETF | 0.18% | 12K | $72,421 | −85 (−0.7%) | September 30, 2026 |
| 5 | T. Rowe Price Extended Equity Market Idx | 0.13% | 8,700 | $51,417 | — | August 31, 2026 |
| 6 | Avantis US Small Cap Equity ETF | 0.11% | 7,492 | $44,278 | — | September 30, 2026 |
| 7 | Fidelity Total Market Index | 0.10% | 6,775 | $40,040 | — | August 31, 2026 |
| 8 | Dimensional US Small Cap ETF | 0.10% | 6,653 | $39,319 | — | September 30, 2026 |
| 9 | Fidelity Series Total Market Index | 0.08% | 5,377 | $31,778 | — | August 31, 2026 |
| 10 | Fidelity Nasdaq Composite Index | 0.05% | 3,216 | $19,007 | — | August 31, 2026 |
| 11 | Vanguard Balanced Index Inv | 0.05% | 3,157 | $18,658 | — | August 31, 2026 |
| 12 | Schwab Total Stock Market Index | 0.04% | 2,981 | $17,618 | — | August 31, 2026 |
| 13 | Vanguard U.S. Eq Idx £ Acc | 0.02% | 1,470 | $8,688 | — | August 31, 2026 |
| 14 | Dimensional US Core Equity 2 ETF | 0.02% | 1,385 | $8,185 | — | September 30, 2026 |
| 15 | Dimensional Gl Cor Eq LC ESG Sc USD A | 0.02% | 1,086 | $6,418 | — | August 31, 2026 |
| 16 | DFA US Core Equity 1 I | 0.02% | 1,052 | $6,217 | — | August 31, 2026 |
| 17 | Dimensional US Sustainability Core 1 ETF | 0.01% | 1,000 | $5,910 | — | September 30, 2026 |
| 18 | Dimensional Global Core Equity USD Acc | 0.01% | 999 | $5,904 | — | August 31, 2026 |
| 19 | Dimensional World Equity GBP Acc | 0.01% | 962 | $5,685 | — | August 31, 2026 |
| 20 | 1290 VT Micro Cap K | 0.01% | 737 | $4,356 | +108 (+17.2%) | August 31, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
TIL insider transactions
latest 1| Date | Name | Transaction | Price | Shares | Value |
|---|---|---|---|---|---|
| 2025-09-10 | Sandeep Laumas | Sell | $23.39 | 30,000 | $701,700 |
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.
TIL shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns TIL
Institutional investors own 62.5% of Instil Bio's shares and insiders 6.56%. The largest holder is BML Capital Management LLC with 9.52% of the shares (646K), as of June 30, 2026. Among the top 20 institutions, 6 added shares and 7 reduced their stake in the latest filings. Short interest is 3.95% of the float, or 10.88 days of average trading volume. The share count rose 578.2% since 2019.
Related: TIL analyst forecast, TIL key metrics. See the TIL stock overview for the latest quote and news.
TIL ownership FAQ
Who owns the most Instil Bio stock?
The largest shareholders of Instil Bio are BML Capital Management LLC (9.52%), Cpmg Inc (6.06%), Vivo Capital, LLC (4.32%), Kalehua Capital Management LLC (2.94%), UBS Group AG (2.62%).
What percentage of Instil Bio is owned by institutions?
Institutions hold 62.5% of Instil Bio's shares outstanding; insiders hold 6.56%.
Which funds own Instil Bio?
The largest fund holders of Instil Bio are Vanguard MStar Total Stk Mkt Idx Invest (1.75%), Nomura Healthcare Fund Class I (0.74%), Fidelity Extended Market Index (0.27%), iShares Micro-Cap ETF (0.18%), T. Rowe Price Extended Equity Market Idx (0.13%).
What is Instil Bio's short interest?
159K shares of Instil Bio were sold short, 3.95% of the float; at the average daily volume it would take 10.88 days to cover.
Are insiders buying or selling Instil Bio?
Of the latest 1 reported insider transactions in Instil Bio (since September 10, 2025), 0 were purchases and 1 were sales.
How many shares of Instil Bio are outstanding?
Instil Bio has 6.8M shares outstanding, of which 3.7M are in the public float.