阿徹航空公司
MX ˙ BMV ˙ US03945R1023
SecurityMX:ACHR / Archer Aviation Inc.
InstitutionVestmark Advisory Solutions, Inc.
Latest Disclosed Ownership342,288 shares
Latest Disclosed Value $ 1,769,629
Vestmark Advisory Solutions, Inc. reports 3.78% decrease in ownership of ACHR / Archer Aviation Inc.

On May 15, 2026 - Vestmark Advisory Solutions, Inc. filed a 13F-HR form disclosing ownership of 342,288 shares of Archer Aviation Inc. (MX:ACHR) valued at $1,769,629 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 6, 2026 disclosing 355,749 shares of Archer Aviation Inc.. This represents a change in shares of -3.78% during the quarter.

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)
2026-05-15 2026-03-31 13F ARCHER AVIATION COM CL A 03945R102 342,288 -13,461 -3.78 1,770 -33.87 0.0122
2026-02-06 2025-12-31 13F ARCHER AVIATION COM CL A 03945R102 355,749 -17,479 -4.68 2,675 -25.17 0.0361
2025-11-10 2025-09-30 13F ARCHER AVIATION COM CL A 03945R102 373,228 -514,422 -57.95 3,576 -62.88 0.0682
2025-08-06 2025-06-30 13F ARCHER AVIATION COM CL A 03945R102 887,650 473,925 114.55 9,631 227.47 0.1391
2025-05-13 2025-03-31 13F ARCHER AVIATION COM CL A 03945R102 413,725 -198,042 -32.37 2,942 -42.70 0.0757
2025-02-06 2024-12-31 13F ARCHER AVIATION COM CL A 03945R102 611,767 138,988 29.40 5,133 258.45 0.1768
2024-11-14 2024-09-30 13F ARCHER AVIATION COM CL A 03945R102 472,779 -51,136 -9.76 1,433 -22.34 0.0533
2024-08-12 2024-06-30 13F ARCHER AVIATION COM CL A 03945R102 523,915 -213,410 -28.94 1,844 -45.86 0.0770
2024-05-15 2024-03-31 13F ARCHER AVIATION COM CL A 03945R102 737,325 114,412 18.37 3,406 -10.93 0.1467
2024-02-06 2023-12-31 13F ARCHER AVIATION COM CL A 03945R102 622,913 622,913 3,825 0.1943
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.