Hyliion Holdings Corp. (HYLN) Ownership
HYLN ownership summary
as of October 18, 2026- Institutions
- 30.8% of shares outstanding
- Insiders
- 28.42% of shares outstanding
- Shares outstanding
- 178.6M
- Float
- 124.7M shares available to trade
- Short interest
- 10.89% 15.3M shares short
- Days to cover
- 8.03 short interest down 13.6% vs prior month
- Institutions 30.80%
- Insiders 28.42%
- Other investors 40.79%
HYLN top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | BlackRock Inc | 6.41% | 11.5M | $34.9M | +2.6M (+28.9%) | June 30, 2026 |
| 2 | Vanguard Capital Management, LLC | 3.11% | 5.6M | $16.9M | −64,471 (−1.1%) | June 30, 2026 |
| 3 | GE Aerospace | 3.08% | 5.5M | $16.8M | — | June 30, 2026 |
| 4 | D. E. Shaw & Co LP | 2.18% | 3.9M | $11.9M | +2.4M (+164.2%) | June 30, 2026 |
| 5 | Geode Capital Management, LLC | 1.85% | 3.3M | $10.1M | +222,949 (+7.2%) | June 30, 2026 |
| 6 | State Street Corp | 1.60% | 2.9M | $8.7M | −148,322 (−4.9%) | June 30, 2026 |
| 7 | Amvescap Plc. | 1.33% | 2.4M | $7.3M | −1.3M (−36.2%) | June 30, 2026 |
| 8 | Millennium Management LLC | 1.07% | 1.9M | $5.8M | +509,714 (+36.5%) | June 30, 2026 |
| 9 | T. Rowe Price Investment Management,Inc. | 0.89% | 1.6M | $4.8M | +1.6M (0.0%) | June 30, 2026 |
| 10 | UBS Group AG | 0.83% | 1.5M | $4.5M | +822,521 (+125.7%) | June 30, 2026 |
| 11 | HITE Hedge Asset Management MLP | 0.78% | 1.4M | $4.3M | −1.4M (−50.5%) | June 30, 2026 |
| 12 | Vanguard Portfolio Management, LLC | 0.78% | 1.4M | $4.3M | +537,052 (+62.4%) | June 30, 2026 |
| 13 | Charles Schwab Investment Management Inc | 0.60% | 1.1M | $3.3M | +54,840 (+5.4%) | June 30, 2026 |
| 14 | Northern Trust Corp | 0.57% | 1.0M | $3.1M | +91,155 (+9.8%) | June 30, 2026 |
| 15 | Acadian Asset Management LLC | 0.52% | 920K | $2.8M | +763,403 (+486.7%) | June 30, 2026 |
| 16 | Palisades Investment Partners, LLC | 0.51% | 908K | $2.8M | +907,933 (0.0%) | June 30, 2026 |
| 17 | Vanguard Fiduciary Trust Co | 0.47% | 846K | $2.6M | +51,957 (+6.5%) | June 30, 2026 |
| 18 | J.Derek Lewis & Associates Inc | 0.47% | 833K | $2.5M | +7,298 (+0.9%) | June 30, 2026 |
| 19 | Dimensional Fund Advisors, Inc. | 0.44% | 779K | $2.4M | −20,945 (−2.6%) | June 30, 2026 |
| 20 | 683 Capital Management LLC | 0.41% | 725K | $2.2M | −100,000 (−12.1%) | March 31, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 13 holders added 10.5M shares and 6 cut 3.1M.
HYLN top mutual fund and ETF holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Vanguard MStar Total Stk Mkt Idx Invest | 2.21% | 3.9M | $12.0M | — | August 31, 2026 |
| 2 | iShares Russell 2000 ETF | 1.89% | 3.4M | $10.3M | −38,784 (−1.1%) | September 30, 2026 |
| 3 | Fidelity Small Cap Index | 0.78% | 1.4M | $4.3M | +12,541 (+0.9%) | July 31, 2026 |
| 4 | iShares Russell 2000 Value ETF | 0.68% | 1.2M | $3.7M | +1,828 (+0.2%) | September 30, 2026 |
| 5 | Invesco WilderHill Clean Energy ETF | 0.65% | 1.2M | $3.5M | +224,886 (+24.2%) | September 30, 2026 |
| 6 | Invesco Dorsey Wright IndustrialsMomtETF | 0.46% | 821K | $2.5M | — | September 30, 2026 |
| 7 | Vanguard Russell 2000 ETF | 0.41% | 736K | $2.2M | +19,943 (+2.8%) | August 31, 2026 |
| 8 | Schwab US Small-Cap ETF™ | 0.39% | 689K | $2.1M | +459 (+0.1%) | September 30, 2026 |
| 9 | Fidelity Extended Market Index | 0.35% | 629K | $1.9M | +4,762 (+0.8%) | August 31, 2026 |
| 10 | DNB Fund Disrpt Opps A EUR Acc | 0.27% | 488K | $1.5M | +148,228 (+43.6%) | August 31, 2026 |
| 11 | LVIP FranklinTempletonMltFctSMIDCapEqStd | 0.25% | 448K | $1.4M | +448,120 (0.0%) | June 30, 2026 |
| 12 | iShares Micro-Cap ETF | 0.23% | 403K | $1.2M | −2,781 (−0.7%) | September 30, 2026 |
| 13 | Vanguard US Momentum Factor ETF | 0.22% | 387K | $1.2M | +387,359 (0.0%) | June 30, 2026 |
| 14 | BlackRock Advantage Small Cap Core Instl | 0.20% | 352K | $1.1M | — | August 31, 2026 |
| 15 | Schwab Small Cap Index | 0.17% | 311K | $947,193 | — | August 31, 2026 |
| 16 | Invesco Dorsey Wright SmallCap Momt ETF | 0.17% | 310K | $944,713 | −824 (−0.3%) | September 30, 2026 |
| 17 | Clough Select Equity ETF | 0.16% | 285K | $870,717 | — | September 30, 2026 |
| 18 | Fidelity Total Market Index | 0.14% | 250K | $761,115 | — | August 31, 2026 |
| 19 | iShares Russell 2000 Small-Cap Idx Instl | 0.13% | 239K | $728,770 | — | August 31, 2026 |
| 20 | Stt Strt SPDR® Russell2000 US SmCapETF | 0.12% | 222K | $677,283 | +10,624 (+5.0%) | August 31, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
HYLN insider transactions
latest 4| Date | Name | Transaction | Price | Shares | Value |
|---|---|---|---|---|---|
| 2025-08-21 | Richard Joseph Freeland | Buy | $1.57 | 65,000 | $102,050 |
| 2025-05-23 | Govindaraj Ramasamy | Buy | $1.13 | 20,000 | $22,600 |
| 2025-05-23 | Greg Standley | Buy | $1.13 | 5,000 | $5,650 |
| 2025-05-23 | Jon Panzer | Buy | $1.14 | 40,000 | $45,600 |
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.
HYLN shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns HYLN
Institutional investors own 30.8% of Hyliion's shares and insiders 28.42%. The largest holder is BlackRock Inc with 6.41% of the shares (11.5M), as of June 30, 2026. Among the top 20 institutions, 13 added shares and 6 reduced their stake in the latest filings. Short interest is 10.89% of the float, or 8.03 days of average trading volume. The share count rose 527.1% since 2018.
Related: HYLN analyst forecast, HYLN key metrics. See the HYLN stock overview for the latest quote and news.
HYLN ownership FAQ
Who owns the most Hyliion stock?
The largest shareholders of Hyliion are BlackRock Inc (6.41%), Vanguard Capital Management, LLC (3.11%), GE Aerospace (3.08%), D. E. Shaw & Co LP (2.18%), Geode Capital Management, LLC (1.85%).
What percentage of Hyliion is owned by institutions?
Institutions hold 30.8% of Hyliion's shares outstanding; insiders hold 28.42%.
Which funds own Hyliion?
The largest fund holders of Hyliion are Vanguard MStar Total Stk Mkt Idx Invest (2.21%), iShares Russell 2000 ETF (1.89%), Fidelity Small Cap Index (0.78%), iShares Russell 2000 Value ETF (0.68%), Invesco WilderHill Clean Energy ETF (0.65%).
What is Hyliion's short interest?
15.3M shares of Hyliion were sold short, 10.89% of the float; at the average daily volume it would take 8.03 days to cover.
Are insiders buying or selling Hyliion?
Of the latest 4 reported insider transactions in Hyliion (since May 23, 2025), 4 were purchases and 0 were sales.
How many shares of Hyliion are outstanding?
Hyliion has 178.6M shares outstanding, of which 124.7M are in the public float.