Harmony Biosciences Holdings, Inc. (HRMY) Ownership
HRMY ownership summary
as of October 18, 2026- Institutions
- 99.7% of shares outstanding
- Insiders
- 1.22% of shares outstanding
- Shares outstanding
- 58.2M
- Float
- 52.1M shares available to trade
- Short interest
- 12.69% 5.5M shares short
- Days to cover
- 5.12 short interest up 19.5% vs prior month
- Institutions 99.67%
- Insiders 1.22%
HRMY top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | BlackRock Inc | 12.20% | 7.1M | $269.5M | +31,930 (+0.5%) | June 30, 2026 |
| 2 | FMR Inc | 6.14% | 3.6M | $135.6M | +416,476 (+13.2%) | June 30, 2026 |
| 3 | Vanguard Portfolio Management, LLC | 4.95% | 2.9M | $109.3M | +166,136 (+6.1%) | June 30, 2026 |
| 4 | American Century Companies Inc | 4.36% | 2.5M | $96.4M | +434,333 (+20.6%) | June 30, 2026 |
| 5 | Dimensional Fund Advisors, Inc. | 4.11% | 2.4M | $90.8M | +317,078 (+15.3%) | June 30, 2026 |
| 6 | Vanguard Capital Management, LLC | 3.61% | 2.1M | $79.9M | +2,738 (+0.1%) | June 30, 2026 |
| 7 | LSV Asset Management | 3.54% | 2.1M | $78.2M | +36,099 (+1.8%) | June 30, 2026 |
| 8 | State Street Corp | 3.19% | 1.9M | $70.6M | +74,960 (+4.2%) | June 30, 2026 |
| 9 | Armistice Capital, LLC | 2.69% | 1.6M | $59.4M | −60,000 (−3.7%) | June 30, 2026 |
| 10 | Geode Capital Management, LLC | 2.48% | 1.4M | $54.7M | +119,929 (+9.1%) | June 30, 2026 |
| 11 | Arrowstreet Capital Limited Partnership | 2.25% | 1.3M | $49.8M | −69,563 (−5.0%) | June 30, 2026 |
| 12 | Renaissance Technologies Corp | 2.05% | 1.2M | $45.4M | +118,000 (+11.0%) | June 30, 2026 |
| 13 | Two Sigma Investments LLC | 1.65% | 959K | $36.4M | +225,693 (+30.8%) | June 30, 2026 |
| 14 | AQR Capital Management LLC | 1.60% | 934K | $35.5M | +218,080 (+30.4%) | June 30, 2026 |
| 15 | SG Americas Securities, LLC | 1.52% | 883K | $33.5M | −1.1M (−56.3%) | June 30, 2026 |
| 16 | Valor Management LLC | 1.40% | 818K | $31.0M | +700,883 (+598.4%) | June 30, 2026 |
| 17 | Morgan Stanley - Brokerage Accounts | 1.26% | 734K | $27.8M | −297,334 (−28.8%) | June 30, 2026 |
| 18 | UBS Group AG | 1.04% | 603K | $22.9M | +154,999 (+34.6%) | June 30, 2026 |
| 19 | DZ BANK AG Deutsche Zentral-Genossenschaftsbank Frankfurt am Main | 0.95% | 551K | $20.9M | −16,040 (−2.8%) | June 30, 2026 |
| 20 | Amvescap Plc. | 0.91% | 529K | $20.1M | −99,727 (−15.9%) | 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 3.0M shares and 6 cut 1.7M.
HRMY top mutual fund and ETF holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | iShares Core S&P Small-Cap ETF | 5.06% | 2.9M | $111.8M | +729 (+0.0%) | September 30, 2026 |
| 2 | Avantis US Small Cap Value ETF | 4.53% | 2.6M | $100.0M | +5,568 (+0.2%) | September 30, 2026 |
| 3 | HBM Healthcare Investments AG Ord | 3.69% | 2.1M | $81.5M | — | June 30, 2026 |
| 4 | Vanguard MStar Total Stk Mkt Idx Invest | 2.67% | 1.6M | $59.1M | — | August 31, 2026 |
| 5 | iShares Russell 2000 ETF | 2.01% | 1.2M | $44.4M | −13,440 (−1.1%) | September 30, 2026 |
| 6 | Vanguard Small Cap Index | 1.94% | 1.1M | $42.9M | −1,442 (−0.1%) | August 31, 2026 |
| 7 | Fidelity Enhanced Small Cap Core ETF | 1.23% | 715K | $27.1M | +1,500 (+0.2%) | September 30, 2026 |
| 8 | Vanguard MStar Small Cap Growth Indx Inv | 1.11% | 648K | $24.6M | −5,895 (−0.9%) | August 31, 2026 |
| 9 | Fidelity Growth Company Fund | 0.90% | 525K | $19.9M | −75,000 (−12.5%) | August 31, 2026 |
| 10 | Fidelity Small Cap Index | 0.85% | 494K | $18.7M | +4,372 (+0.9%) | July 31, 2026 |
| 11 | Invesco Pharmaceuticals ETF | 0.79% | 459K | $17.4M | +1,016 (+0.2%) | September 30, 2026 |
| 12 | iShares S&P Small-Cap 600 Growth ETF | 0.79% | 459K | $17.4M | — | September 30, 2026 |
| 13 | State Street SPDR Port S&P 600 Sm CpETF | 0.78% | 453K | $17.2M | — | September 30, 2026 |
| 14 | iShares Russell 2000 Growth ETF | 0.72% | 422K | $16.0M | −534 (−0.1%) | September 30, 2026 |
| 15 | DFA US Small Cap Value I | 0.66% | 386K | $14.6M | +55,060 (+16.6%) | August 31, 2026 |
| 16 | DFA US Targeted Value I | 0.64% | 370K | $14.0M | +46,666 (+14.4%) | August 31, 2026 |
| 17 | Dimensional US Targeted Value ETF | 0.50% | 291K | $11.0M | +91 (+0.0%) | September 30, 2026 |
| 18 | State Street® SPDR® S&P 600™ Sm Cp GrETF | 0.49% | 285K | $10.8M | — | September 30, 2026 |
| 19 | Pacer US Small Cap Cash Cows 100 ETF | 0.46% | 267K | $10.1M | +600 (+0.2%) | September 30, 2026 |
| 20 | Schwab US Small-Cap ETF™ | 0.45% | 261K | $9.9M | +171 (+0.1%) | September 30, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
HRMY insider transactions
latest 3| Date | Name | Transaction | Price | Shares | Value |
|---|---|---|---|---|---|
| 2026-01-26 | Sandip Kapadia | Sell | $37.15 | 3,746 | $139,164 |
| 2026-01-15 | Sandip Kapadia | Sell | $35.92 | 20,961 | $752,919 |
| 2025-12-12 | Jeffrey M Dayno | Sell | $40.11 | 25,933 | $1.0M |
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.
HRMY shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns HRMY
Institutional investors own 99.7% of Harmony Biosciences's shares and insiders 1.22%. The largest holder is BlackRock Inc with 12.20% of the shares (7.1M), 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 12.69% of the float, or 5.12 days of average trading volume. The share count rose 6.2% since 2019.
Related: HRMY analyst forecast, HRMY key metrics. See the HRMY stock overview for the latest quote and news.
HRMY ownership FAQ
Who owns the most Harmony Biosciences stock?
The largest shareholders of Harmony Biosciences are BlackRock Inc (12.20%), FMR Inc (6.14%), Vanguard Portfolio Management, LLC (4.95%), American Century Companies Inc (4.36%), Dimensional Fund Advisors, Inc. (4.11%).
What percentage of Harmony Biosciences is owned by institutions?
Institutions hold 99.7% of Harmony Biosciences's shares outstanding; insiders hold 1.22%.
Which funds own Harmony Biosciences?
The largest fund holders of Harmony Biosciences are iShares Core S&P Small-Cap ETF (5.06%), Avantis US Small Cap Value ETF (4.53%), HBM Healthcare Investments AG Ord (3.69%), Vanguard MStar Total Stk Mkt Idx Invest (2.67%), iShares Russell 2000 ETF (2.01%).
What is Harmony Biosciences's short interest?
5.5M shares of Harmony Biosciences were sold short, 12.69% of the float; at the average daily volume it would take 5.12 days to cover.
Are insiders buying or selling Harmony Biosciences?
Of the latest 3 reported insider transactions in Harmony Biosciences (since December 12, 2025), 0 were purchases and 3 were sales.
How many shares of Harmony Biosciences are outstanding?
Harmony Biosciences has 58.2M shares outstanding, of which 52.1M are in the public float.