MannKind Corporation (MNKD) Ownership
MNKD ownership summary
as of October 18, 2026- Institutions
- 57.1% of shares outstanding
- Insiders
- 1.47% of shares outstanding
- Shares outstanding
- 321.5M
- Float
- 297.6M shares available to trade
- Short interest
- 8.24% 26.2M shares short
- Days to cover
- 5.70 short interest down 11.0% vs prior month
- Institutions 57.11%
- Insiders 1.47%
- Other investors 41.42%
MNKD top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | BlackRock Inc | 9.99% | 32.1M | $97.7M | +3.5M (+12.3%) | June 30, 2026 |
| 2 | Rubric Capital Management LP | 5.60% | 18.0M | $54.7M | +14.4M (+397.2%) | June 30, 2026 |
| 3 | State Street Corp | 5.03% | 16.2M | $49.2M | −2.5M (−13.4%) | June 30, 2026 |
| 4 | Vanguard Capital Management, LLC | 4.10% | 13.2M | $40.0M | +278,326 (+2.2%) | June 30, 2026 |
| 5 | Geode Capital Management, LLC | 2.47% | 7.9M | $24.2M | +442,056 (+5.9%) | June 30, 2026 |
| 6 | Wellington Management Company LLP | 2.44% | 7.8M | $23.8M | +4.6M (+138.9%) | June 30, 2026 |
| 7 | Frazier Life Sciences Management, L.P. | 2.05% | 6.6M | $20.1M | +700,000 (+11.9%) | June 30, 2026 |
| 8 | Deep Track Capital, LP | 1.87% | 6.0M | $18.2M | +6.0M (0.0%) | June 30, 2026 |
| 9 | 180 WEALTH ADVISORS, LLC | 1.54% | 5.0M | $15.1M | +667,648 (+15.6%) | June 30, 2026 |
| 10 | TSP Capital Management Group/LLC | 1.30% | 4.2M | $12.7M | +207,850 (+5.2%) | September 30, 2026 |
| 11 | FMR Inc | 1.28% | 4.1M | $12.5M | +620,082 (+17.8%) | June 30, 2026 |
| 12 | AQR Capital Management LLC | 1.18% | 3.8M | $11.6M | +3.4M (+740.8%) | June 30, 2026 |
| 13 | Morgan Stanley - Brokerage Accounts | 1.08% | 3.5M | $10.6M | −2.3M (−40.0%) | June 30, 2026 |
| 14 | BRAIDWELL LP | 1.08% | 3.5M | $10.5M | +3.5M (0.0%) | June 30, 2026 |
| 15 | Vanguard Portfolio Management, LLC | 0.93% | 3.0M | $9.1M | −169,655 (−5.3%) | June 30, 2026 |
| 16 | Northern Trust Corp | 0.90% | 2.9M | $8.8M | +211,340 (+7.9%) | June 30, 2026 |
| 17 | UBS Group AG | 0.90% | 2.9M | $8.8M | −5.4M (−65.0%) | June 30, 2026 |
| 18 | Two Sigma Investments LLC | 0.84% | 2.7M | $8.2M | −202,162 (−7.0%) | June 30, 2026 |
| 19 | Charles Schwab Investment Management Inc | 0.81% | 2.6M | $7.9M | +49,660 (+1.9%) | June 30, 2026 |
| 20 | Bank of America Corp | 0.74% | 2.4M | $7.2M | −1.0M (−30.1%) | June 30, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 14 holders added 38.5M shares and 6 cut 11.6M.
MNKD top mutual fund and ETF holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Vanguard MStar Total Stk Mkt Idx Invest | 2.90% | 9.3M | $28.4M | — | August 31, 2026 |
| 2 | iShares Russell 2000 ETF | 2.55% | 8.2M | $24.9M | −94,400 (−1.1%) | September 30, 2026 |
| 3 | State Street® SPDR® S&P® Biotech ETF | 2.24% | 7.2M | $21.9M | −137,850 (−1.9%) | September 30, 2026 |
| 4 | Fidelity Select Biotechnology | 1.41% | 4.5M | $13.7M | +47,200 (+1.1%) | August 31, 2026 |
| 5 | Fidelity Small Cap Index | 1.05% | 3.4M | $10.2M | +27,708 (+0.8%) | July 31, 2026 |
| 6 | iShares Russell 2000 Growth ETF | 0.93% | 3.0M | $9.0M | −3,767 (−0.1%) | September 30, 2026 |
| 7 | iShares Biotechnology ETF | 0.74% | 2.4M | $7.3M | −18,136 (−0.8%) | September 30, 2026 |
| 8 | Vanguard Russell 2000 ETF | 0.58% | 1.9M | $5.6M | +83,195 (+4.7%) | September 30, 2026 |
| 9 | Schwab US Small-Cap ETF™ | 0.53% | 1.7M | $5.2M | +1,152 (+0.1%) | September 30, 2026 |
| 10 | BlackRock Advantage Small Cap Core Instl | 0.48% | 1.5M | $4.7M | — | August 31, 2026 |
| 11 | Fidelity Extended Market Index | 0.47% | 1.5M | $4.6M | −15,726 (−1.0%) | August 31, 2026 |
| 12 | Janus Henderson Small/Md Cp Gr Alpha ETF | 0.44% | 1.4M | $4.3M | −275,554 (−16.3%) | September 30, 2026 |
| 13 | First Trust Small Cap Gr AlphaDEX® ETF | 0.41% | 1.3M | $4.0M | +2,349 (+0.2%) | September 30, 2026 |
| 14 | Vanguard Health Care ETF | 0.28% | 890K | $2.7M | −793 (−0.1%) | September 30, 2026 |
| 15 | Schwab Small Cap Index | 0.23% | 748K | $2.3M | — | August 31, 2026 |
| 16 | Xtrackers S&P 500 Swap ETF 1C | 0.18% | 594K | $1.8M | +332,261 (+126.9%) | December 31, 2025 |
| 17 | Northwestern Mutual Ser Small Cap Gr Stk | 0.18% | 592K | $1.8M | +592,050 (0.0%) | June 30, 2026 |
| 18 | Fidelity Total Market Index | 0.18% | 581K | $1.8M | +5,871 (+1.0%) | August 31, 2026 |
| 19 | iShares Russell 2000 Small-Cap Idx Instl | 0.18% | 576K | $1.7M | — | August 31, 2026 |
| 20 | Stt Strt SPDR® Russell2000 US SmCapETF | 0.17% | 551K | $1.7M | −38,381 (−6.5%) | September 30, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
MNKD insider transactions
latest 14| Date | Name | Transaction | Price | Shares | Value |
|---|---|---|---|---|---|
| 2026-03-10 | Michael Castagna | Buy | $2.59 | 100,000 | $259,000 |
| 2026-01-08 | Stuart A Tross | Sell | $6.33 | 47,006 | $297,548 |
| 2025-12-17 | Michael Castagna | Sell | $6.01 | 65,804 | $395,482 |
| 2025-12-16 | Michael Castagna | Sell | $6.00 | 21,310 | $127,860 |
| 2025-12-12 | Michael Castagna | Sell | $6.00 | 20,806 | $124,836 |
| 2025-12-02 | Michael Castagna | Sell | $5.57 | 107,920 | $601,114 |
| 2025-11-14 | Sanjay R Singh | Sell | $5.03 | 18,777 | $94,448 |
| 2025-09-16 | Stuart A Tross | Sell | $5.34 | 47,000 | $250,980 |
| 2025-07-16 | Steven B Binder | Sell | $3.94 | 75,367 | $296,946 |
| 2025-06-10 | Steven B Binder | Sell | $4.00 | 64,085 | $256,340 |
| 2025-05-20 | David Thomson | Sell | $4.41 | 2,345 | $10,341 |
| 2025-05-20 | Steven B Binder | Sell | $4.40 | 12,078 | $53,143 |
| 2025-05-13 | David Thomson | Sell | $4.68 | 32,179 | $150,598 |
| 2025-05-13 | Steven B Binder | Sell | $4.69 | 80,144 | $375,875 |
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.
MNKD shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns MNKD
Institutional investors own 57.1% of MannKind's shares and insiders 1.47%. The largest holder is BlackRock Inc with 9.99% of the shares (32.1M), as of June 30, 2026. Among the top 20 institutions, 14 added shares and 6 reduced their stake in the latest filings. Short interest is 8.24% of the float, or 5.70 days of average trading volume. The share count rose 295.8% since 2014.
Related: MNKD analyst forecast, MNKD key metrics. See the MNKD stock overview for the latest quote and news.
MNKD ownership FAQ
Who owns the most MannKind stock?
The largest shareholders of MannKind are BlackRock Inc (9.99%), Rubric Capital Management LP (5.60%), State Street Corp (5.03%), Vanguard Capital Management, LLC (4.10%), Geode Capital Management, LLC (2.47%).
What percentage of MannKind is owned by institutions?
Institutions hold 57.1% of MannKind's shares outstanding; insiders hold 1.47%.
Which funds own MannKind?
The largest fund holders of MannKind are Vanguard MStar Total Stk Mkt Idx Invest (2.90%), iShares Russell 2000 ETF (2.55%), State Street® SPDR® S&P® Biotech ETF (2.24%), Fidelity Select Biotechnology (1.41%), Fidelity Small Cap Index (1.05%).
What is MannKind's short interest?
26.2M shares of MannKind were sold short, 8.24% of the float; at the average daily volume it would take 5.70 days to cover.
Are insiders buying or selling MannKind?
Of the latest 14 reported insider transactions in MannKind (since May 13, 2025), 1 were purchases and 13 were sales.
How many shares of MannKind are outstanding?
MannKind has 321.5M shares outstanding, of which 297.6M are in the public float.