Stocks › HYLN
Hyliion Holdings Corp.
HYLN·NYSE·
United States·USD
United States·USD$4.04
-0.10 (-2.42%)
Close · Oct 6, 2026 · Close Prices from Tiingo.com
HYLN
Hyliion Holdings Corp. · NYSE
Nasdaq 100S&P 500
Filings
Default90D1Y5YALL
HYLNS&P 500 (rebased)
Congress BuyCongress SellInsider BuyInsider SellForm 1448-K ResultsLobbying
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Daily closes, adjusted for splits and dividends · Close Prices from Tiingo.comHover a marker, every one is a filing · move across the line for the crosshair
Congressional Trades
Recent trades of HYLN by members of U.S. Congress · 0 on record
No congressional trades in HYLN on record.
Whale Activity
Position changes in HYLN reported for 2026-06-30 by 9 tracked institutional filers
- Increased6
- New1
- Held0
- Decreased2
- Closed0
- No prior filing0
| Filer | Shares | Value | Change |
|---|---|---|---|
| BlackRock, Inc. | 11.5M | $59.7M | increased |
| VANGUARD CAPITAL MANAGEMENT LLC | 5.6M | $28.9M | decreased |
| D. E. Shaw & Co., Inc. | 3.9M | $20.3M | increased |
| MILLENNIUM MANAGEMENT LLC | 1.9M | $9.9M | increased |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 1.4M | $7.3M | increased |
| TWO SIGMA INVESTMENTS, LP | 420.2K | $2.2M | increased |
| RENAISSANCE TECHNOLOGIES LLC | 292.9K | $1.5M | decreased |
| CITADEL ADVISORS LLC | 196.5K | $1.0M | increased |
| Point72 Asset Management, L.P. | 175.4K | $914K | new |
KeyVex tracks a curated set of large 13F filers plus the largest positions in recent filings, so this is a sample of institutional activity, not the whole market.
Insider Trading
Net shares bought (+) or sold (−) on the open market by HYLN insiders, by quarter · Form 4
Recent Insider Transactions
385 transactions on record · newest first
| Insider | Type | Shares | Price | Value | Date | |
|---|---|---|---|---|---|---|
| Cubbage Vincent T.Director · Director | Purchase | +50.0K | $3.40 | $170K | Aug 27, 2026 | Form 4 ↗ |
| Healy Thomas J.Chief Executive Officer · Director · 10% owner | Gift | −2.5M | $0.00 | $0 | Jun 26, 2026 | Form 4 ↗ |
| Cubbage Vincent T.Director | Gift | −11.5K | $0.00 | $0 | May 26, 2026 | Form 4 ↗ |
| RAMASAMY GOVINDARAJChief Commercial Officer | Other | −1,715 | $3.92 | $7K | May 20, 2026 | Form 4 ↗ |
| Oxholm Jose MiguelChief Legal&Compliance Officer | Other | −3,026 | $3.92 | $12K | May 20, 2026 | Form 4 ↗ |
| MOOK JOSHUA T.Chief Technology Officer | Other | −2,003 | $3.92 | $8K | May 20, 2026 | Form 4 ↗ |
| Panzer JonChief Financial Officer | Other | −1,965 | $3.92 | $8K | May 20, 2026 | Form 4 ↗ |
| Healy Thomas J.Chief Executive Officer · Director · 10% owner | Other | −11.4K | $3.98 | $45K | May 20, 2026 | Form 4 ↗ |
| Standley GregChief Accounting Officer. | Other | −3,981 | $4.05 | $16K | May 19, 2026 | Form 4 ↗ |
| RAMASAMY GOVINDARAJChief Commercial Officer | Other | −4,800 | $4.06 | $19K | May 19, 2026 | Form 4 ↗ |
| Oxholm Jose MiguelChief Legal&Compliance Officer | Other | −8,550 | $4.06 | $35K | May 19, 2026 | Form 4 ↗ |
| MOOK JOSHUA T.Chief Technology Officer | Other | −4,800 | $4.06 | $19K | May 19, 2026 | Form 4 ↗ |
| Panzer JonChief Financial Officer | Other | −6,100 | $4.06 | $25K | May 19, 2026 | Form 4 ↗ |
| Healy Thomas J.Chief Executive Officer · Director · 10% owner | Other | −16.6K | $4.08 | $68K | May 19, 2026 | Form 4 ↗ |
| RAMASAMY GOVINDARAJChief Commercial Officer | Other | −130 | $2.02 | $263 | Mar 10, 2026 | Form 4 ↗ |
| Standley GregChief Accounting Officer. | Other | −7,411 | $2.04 | $15K | Mar 3, 2026 | Form 4 ↗ |
| RAMASAMY GOVINDARAJChief Commercial Officer | Other | −12.8K | $2.04 | $26K | Mar 3, 2026 | Form 4 ↗ |
| Oxholm Jose MiguelChief Legal&Compliance Officer | Other | −24.9K | $2.04 | $51K | Mar 3, 2026 | Form 4 ↗ |
| MOOK JOSHUA T.Chief Technology Officer | Other | −14.8K | $2.04 | $30K | Mar 3, 2026 | Form 4 ↗ |
| LANTZ CHERIChief Strategy Officer | Other | −16.7K | $2.04 | $34K | Mar 3, 2026 | Form 4 ↗ |
Fund Holders
Mutual funds and ETFs holding HYLN · SEC Form N-PORT
| Fund | Shares | Value | % of fund | As of |
|---|---|---|---|---|
| VANGUARD TOTAL STOCK MARKET INDEX FUND VANGUARD INDEX FUNDS | 3.9M | $20.5M | 0.00% | Jun 30, 2026 |
| iShares Russell 2000 ETF iShares Trust | 3.4M | $17.5M | 0.02% | Jun 30, 2026 |
| VANGUARD EXTENDED MARKET INDEX FUND VANGUARD INDEX FUNDS | 1.5M | $7.7M | 0.01% | Jun 30, 2026 |
| iShares Russell 2000 Value ETF iShares Trust | 1.2M | $6.1M | 0.04% | Jun 30, 2026 |
| Fidelity Small Cap Index Fund Fidelity Salem Street Trust | 1.4M | $5.0M | 0.01% | Jul 31, 2026 |
| T. Rowe Price Small-Cap Value Fund, Inc. | 907.9K | $4.7M | 0.04% | Jun 30, 2026 |
| Fidelity Extended Market Index Fund Fidelity Concord Street Trust | 661.2K | $4.6M | 0.01% | May 31, 2026 |
| VANGUARD RUSSELL 2000 INDEX FUND VANGUARD SCOTTSDALE FUNDS | 636.7K | $4.5M | 0.03% | May 31, 2026 |
| Schwab U.S. Small-Cap ETF SCHWAB STRATEGIC TRUST | 605.3K | $4.2M | 0.02% | May 31, 2026 |
| Invesco WilderHill Clean Energy ETF Invesco Exchange-Traded Fund Trust | 1.0M | $3.6M | 0.87% | Jul 31, 2026 |
Mutual funds and ETFs whose N-PORT filings list HYLN's shares (CUSIP 449109107), each fund at its latest report since Mar 7, 2026, largest positions first. Bonds, options and short positions are left out.
Activist & Passive Stakes
Schedule 13D / 13G beneficial-ownership filings
- BlackRock, Inc.SCHEDULE 13G · passive (13G) · 10.1M shares5.7%
Jul 28, 2026 · ↗
Corporate Lobbying
Estimated quarterly lobbying spending reported under the LDA, filings naming hyliion as client
- MEHLMAN CONSULTING, INC.HYLIION · 2026 Q2 · ENV, ENG, BUD, TAX$40K
Filing ↗ - MEHLMAN CONSULTING, INC.HYLIION · 2026 Q1 · ENV, ENG, BUD, TAX$40K
Filing ↗ - MEHLMAN CONSULTING, INC.HYLIION · 2025 Q4 · ENV, ENG, BUD, TAX$40K
Filing ↗ - MEHLMAN CONSULTING, INC.HYLIION · 2025 Q3 · ENV, ENG, BUD, TAX$40K
Filing ↗ - MEHLMAN CONSULTING, INC.HYLIION · 2025 Q2 · ENG, BUD, ENV, TAX$40K
Filing ↗
Government Contracts
Federal awards to Hyliion Holdings Corp. · USAspending
No federal contract awards found for Hyliion Holdings Corp..
U.S. Patents
Recent USPTO applications naming Hyliion Holdings Corp.
No USPTO patent applications found for Hyliion Holdings Corp..
Annual Financials
From HYLN's 10-K filings · XBRL
No annual XBRL figures on record for HYLN. KeyVex's fundamentals cover about 130 large companies so far.
Stock Splits
Every split and reverse split in the price history
No stock splits in HYLN's price history.
Material Events (8-K)
Corporate events filed with the SEC
About Hyliion Holdings Corp.
From SEC EDGAR company records
Industry (SIC 3713)Truck & Bus Bodies
SectorIndustrials
HeadquartersCEDAR PARK, TX
IncorporatedDE
SEC CIK0001759631 ↗
Former namesTortoise Acquisition Corp.