AltShares Trust - AltShares Merger Arbitrage ETF
US ˙ ARCA ˙ US02210T1088

SecurityARB / AltShares Trust - AltShares Merger Arbitrage ETF
InstitutionGts Securities Llc
Latest Disclosed Ownership15,628 shares
Latest Disclosed Value $ 458,213
Gts Securities Llc reports 64.18% decrease in ownership of ARB / AltShares Trust - AltShares Merger Arbitrage ETF

On May 14, 2026 - Gts Securities Llc filed a 13F-HR form disclosing ownership of 15,628 shares of AltShares Trust - AltShares Merger Arbitrage ETF (US:ARB) valued at $458,213 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 43,634 shares of AltShares Trust - AltShares Merger Arbitrage ETF. This represents a change in shares of -64.18% during the quarter. The current value of the position is $465,714 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 ALTSHARES TRUST MERGER ARBITRAGE 02210T108 15,628 -28,006 -64.18 458 -63.88 0.0162
2026-02-13 2025-12-31 13F ALTSHARES TRUST MERGER ARBITRAGE 02210T108 43,634 43,634 1,268 0.0433
2025-11-14 2025-09-30 13F ALTSHARES TRUST MERGER ARBITRAGE 02210T108 0 -19,237 -100.00 0 -100.00
2025-08-08 2025-06-30 13F ALTSHARES TRUST MERGER ARBITRAGE 02210T108 19,237 -1,139 -5.59 548 -4.70 0.0244
2025-05-15 2025-03-31 13F ALTSHARES TRUST MERGER ARBITRAGE 02210T108 20,376 -44,302 -68.50 575 -67.70 0.0249
2025-02-18 2024-12-31 13F ALTSHARES TRUST MERGER ARBITRAGE 02210T108 64,678 64,678 1,781 0.0867
2024-11-13 2024-09-30 13F ALTSHARES TRUST MERGER ARBITRAGE 02210T108 0 -18,831 -100.00 0 -100.00
2024-08-14 2024-06-30 13F ALTSHARES TRUST MERGER ARBITRAGE 02210T108 18,831 -5,541 -22.74 507 -23.56 0.0011
2024-05-15 2024-03-31 13F ALTSHARES TRUST MERGER ARBITRAGE 02210T108 24,372 12,337 102.51 662 106.23 0.0012
2024-02-15 2023-12-31 13F ALTSHARES TRUST MERGER ARBITRAGE 02210T108 12,035 -111 -0.91 322 0.94 0.0005
2023-11-15 2023-09-30 13F ALTSHARES TRUST MERGER ARBITRAGE 02210T108 12,146 12,146 319 0.0006
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.