United Maritime Corporation

SecurityUSEA / United Maritime Corporation
InstitutionRenaissance Technologies Llc
ManagerJames Simons
Latest Disclosed Ownership232,535 shares
Latest Disclosed Value $ 469,721
Renaissance Technologies Llc reports 208.81% increase in ownership of USEA / United Maritime Corporation

On May 14, 2026 - Renaissance Technologies Llc filed a 13F-HR form disclosing ownership of 232,535 shares of United Maritime Corporation (US:USEA) valued at $469,721 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 75,300 shares of United Maritime Corporation. This represents a change in shares of 208.81% during the quarter. The current value of the position is $592,964 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)
2026-05-14 2026-03-31 13F UNITED MARITIME COM Y92335101 232,535 157,235 208.81 470 266.41 0.0007
2026-02-12 2025-12-31 13F UNITED MARITIME COM Y92335101 75,300 65,100 638.24 128 700.00 0.0002
2025-11-13 2025-09-30 13F UNITED MARITIME COM Y92335101 10,200 10,200 17 0.0000
2025-05-14 2025-03-31 13F UNITED MARITIME COM Y92335101 0 -60,502 -100.00 0 -100.00
2025-02-13 2024-12-31 13F UNITED MARITIME COM Y92335101 60,502 -78,281 -56.41 105 -71.11 0.0002
2024-11-13 2024-09-30 13F UNITED MARITIME COM Y92335101 138,783 42,869 44.70 360 44.58 0.0005
2024-08-09 2024-06-30 13F UNITED MARITIME COM Y92335101 95,914 20,514 27.21 249 0.0004
2024-05-13 2024-03-31 13F UNITED MARITIME COM Y92335101 75,400 1,784 2.42 0 0.0003
2024-02-13 2023-12-31 13F UNITED MARITIME COM Y92335101 73,616 43,616 145.39 0 0.0003
2023-11-14 2023-09-30 13F UNITED MARITIME COM Y92335101 30,000 30,000 0 0.0001
2023-05-12 2023-03-31 13F UNITED MARITIME COM Y92335101 0 -32,861 -100.00 0 0.0000
2023-02-13 2022-12-31 13F UNITED MARITIME COM Y92335101 32,861 32,861 0 0.0002
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.