Hyliion Holdings Corp.
US ˙ NYSEAM ˙ US4491091074

SecurityHYLN / Hyliion Holdings Corp.
InstitutionCitigroup Inc
Latest Disclosed Ownership59,585 shares
Latest Disclosed Value $ 104,869
Citigroup Inc reports 1,034.95% increase in ownership of HYLN / Hyliion Holdings Corp.

On May 11, 2026 - Citigroup Inc filed a 13F-HR form disclosing ownership of 59,585 shares of Hyliion Holdings Corp. (US:HYLN) valued at $104,870 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 5,250 shares of Hyliion Holdings Corp.. This represents a change in shares of 1,034.95% during the quarter. The current value of the position is $411,136 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-11 2026-03-31 13F HYLIION HOLDINGS COMMON STOCK 449109107 59,585 54,335 1,034.95 105 1,055.56 0.0000
2026-02-13 2025-12-31 13F HYLIION HOLDINGS COMMON STOCK 449109107 5,250 3,145 149.41 10 125.00 0.0000
2025-11-10 2025-09-30 13F HYLIION HOLDINGS COMMON STOCK 449109107 2,105 -41,493 -95.17 4 -92.98 0.0000
2025-08-11 2025-06-30 13F HYLIION HOLDINGS COMMON STOCK 449109107 43,598 -54,347 -55.49 58 -58.39 0.0000
2025-05-12 2025-03-31 13F HYLIION HOLDINGS COMMON STOCK 449109107 97,945 -10,911 -10.02 137 -51.76 0.0001
2025-02-12 2024-12-31 13F HYLIION HOLDINGS COMMON STOCK 449109107 108,856 6,095 5.93 284 11.81 0.0002
2024-11-12 2024-09-30 13F HYLIION HOLDINGS COMMON STOCK 449109107 102,761 71,014 223.69 255 398.04 0.0001
2024-08-12 2024-06-30 13F HYLIION HOLDINGS COMMON STOCK 449109107 31,747 3,635 12.93 51 4.08 0.0000
2024-05-10 2024-03-31 13F HYLIION HOLDINGS COMMON STOCK 449109107 28,112 7,076 33.64 49 188.24 0.0000
2024-02-09 2023-12-31 13F HYLIION HOLDINGS COMMON STOCK 449109107 21,036 -8,604 -29.03 17 -50.00 0.0000
2023-12-06 2023-09-30 13F/A-1 HYLIION HOLDINGS COMMON STOCK 449109107 29,640 -52,185 -63.78 35 -75.00 0.0000
2023-11-09 2023-09-30 13F HYLIION HOLDINGS COMMON STOCK 449109107 29,640 -52,185 35 0.0000
2023-08-10 2023-06-30 13F HYLIION HOLDINGS COMMON STOCK 449109107 81,825 -210 -0.26 137 -16.05 0.0001
2023-05-11 2023-03-31 13F HYLIION HOLDINGS COMMON STOCK 449109107 82,035 44,864 120.70 162 88.37 0.0001
2023-02-09 2022-12-31 13F HYLIION HOLDINGS COMMON STOCK 449109107 37,171 -2,633 -6.61 87 -24.56 0.0001
2022-11-10 2022-09-30 13F HYLIION HOLDINGS COMMON STOCK 449109107 39,804 -8,349 -17.34 114 -26.45 0.0001
2022-08-10 2022-06-30 13F HYLIION HOLDINGS COMMON STOCK 449109107 48,153 3,139 6.97 155 -22.11 0.0001
2022-05-12 2022-03-31 13F HYLIION HOLDINGS COMMON STOCK 449109107 45,014 -33,400 -42.59 199 -59.05 0.0001
2022-02-10 2021-12-31 13F HYLIION HOLDINGS COMMON STOCK 449109107 78,414 20,325 34.99 486 -0.21 0.0003
2021-11-10 2021-09-30 13F HYLIION HOLDINGS COMMON STOCK 449109107 58,089 398 0.69 487 -27.53 0.0003
2021-08-10 2021-06-30 13F HYLIION HOLDINGS COMMON STOCK 449109107 57,691 47,862 486.95 672 540.00 0.0004
2021-05-13 2021-03-31 13F HYLIION HOLDINGS COMMON STOCK 449109107 9,829 -134,582 -93.19 105 -95.59 0.0001
2021-02-11 2020-12-31 13F HYLIION HOLDINGS COMMON STOCK 449109107 144,411 144,411 2,380 0.0014
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.