Lockheed Martin Corporation
MX ˙ BMV ˙ US5398301094
SecurityMX:LMT / Lockheed Martin Corporation
InstitutionMainstay Capital Management Llc /adv
Latest Disclosed Ownership676 shares
Latest Disclosed Value $ 408,568
Mainstay Capital Management Llc /adv ownership in LMT / Lockheed Martin Corporation

On May 12, 2026 - Mainstay Capital Management Llc /adv filed a 13F-HR form disclosing ownership of 676 shares of Lockheed Martin Corporation (MX:LMT) valued at $408,568 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 27, 2026 disclosing 676 shares of Lockheed Martin Corporation. This represents a change in shares of 0.00% 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)
2026-05-12 2026-03-31 13F LOCKHEED MARTIN COM 539830109 676 0 0.00 409 25.15 0.0315
2026-01-27 2025-12-31 13F LOCKHEED MARTIN COM 539830109 676 0 0.00 327 -3.26 0.0250
2025-12-10 2025-09-30 13F LOCKHEED MARTIN COM 539830109 676 -676 -50.00 337 -46.17 0.0338
2025-07-24 2025-06-30 13F LOCKHEED MARTIN COM 539830109 1,352 626 86.23 626 93.21 0.0309
2025-05-05 2025-03-31 13F LOCKHEED MARTIN COM 539830109 726 0 0.00 324 -7.95 0.0445
2025-02-04 2024-12-31 13F LOCKHEED MARTIN COM 539830109 726 0 0.00 353 -16.98 0.0536
2024-10-23 2024-09-30 13F LOCKHEED MARTIN COM 539830109 726 0 0.00 424 25.07 0.0710
2024-07-30 2024-06-30 13F LOCKHEED MARTIN COM 539830109 726 0 0.00 339 2.73 0.0595
2024-04-30 2024-03-31 13F LOCKHEED MARTIN COM 539830109 726 0 0.00 330 0.30 0.0624
2024-01-25 2023-12-31 13F LOCKHEED MARTIN COM 539830109 726 -8 -1.09 329 9.67 0.0626
2023-10-26 2023-09-30 13F LOCKHEED MARTIN COM 539830109 734 8 1.10 300 -10.18 0.0635
2023-07-25 2023-06-30 13F LOCKHEED MARTIN COM 539830109 726 0 0.00 334 -2.62 0.0599
2023-05-03 2023-03-31 13F LOCKHEED MARTIN COM 539830109 726 0 0.00 343 -2.83 0.0680
2023-02-14 2022-12-31 13F LOCKHEED MARTIN COM 539830109 726 0 0.00 353 26.07 0.0785
2022-11-15 2022-09-30 13F LOCKHEED MARTIN COM 539830109 726 0 0.00 280 -10.26 0.0701
2022-08-05 2022-06-30 13F LOCKHEED MARTIN COM 539830109 726 0 0.00 312 -2.50 0.0719
2022-05-10 2022-03-31 13F LOCKHEED MARTIN COM 539830109 726 0 0.00 320 24.03 0.0586
2022-02-15 2021-12-31 13F LOCKHEED MARTIN COM 539830109 726 -726 -50.00 258 -48.61 0.0780
2021-11-12 2021-09-30 13F LOCKHEED MARTIN COM 539830109 1,452 726 100.00 502 82.55 0.2868
2021-08-06 2021-06-30 13F LOCKHEED MARTIN COM 539830109 726 0 0.00 275 2.61 0.0645
2021-05-13 2021-03-31 13F LOCKHEED MARTIN COM 539830109 726 -54 -6.92 268 -3.25 0.0829
2021-03-04 2020-12-31 13F LOCKHEED MARTIN COM 539830109 780 25 3.31 277 -4.15 0.0811
2020-11-13 2020-09-30 13F LOCKHEED MARTIN COM 539830109 755 -130 -14.69 289 -10.53 0.0756
2020-07-23 2020-06-30 13F LOCKHEED MARTIN COM 539830109 885 30 3.51 323 11.38 0.0940
2020-04-23 2020-03-31 13F LOCKHEED MARTIN COM 539830109 855 0 0.00 290 -12.91 0.0934
2020-01-21 2019-12-31 13F LOCKHEED MARTIN COM 539830109 855 0 0.00 333 0.00 0.0766
2019-10-16 2019-09-30 13F LOCKHEED MARTIN COM 539830109 855 0 0.00 333 7.42 0.1841
2019-08-07 2019-06-30 13F LOCKHEED MARTIN COM 539830109 855 -170 -16.59 310 0.65 0.1625
2019-04-23 2019-03-31 13F LOCKHEED MARTIN COM 539830109 1,025 0 0.00 308 14.93 0.2361
2019-02-08 2018-12-31 13F LOCKHEED MARTIN COM 539830109 1,025 1,025 268 0.1939
2018-11-13 2018-09-30 13F LOCKHEED MARTIN COM COM 539830109 0 -855 -100.00 0 -100.00
2018-08-24 2018-06-30 13F/A-1 LOCKHEED MARTIN COM 539830109 855 0 0.00 253 -12.15 0.1996
2018-08-23 2018-06-30 13F LOCKHEED MARTIN COM COM 539830109 223,150 222,295 785
2018-05-10 2018-03-31 13F LOCKHEED MARTIN COM 539830109 855 -100 -10.47 288 -6.19 0.2191
2018-05-10 2017-12-31 13F/A-1 LOCKHEED MARTIN COM 539830109 955 955 307 0.2545
2018-03-28 2017-12-31 13F LOCKHEED MARTIN COM 539830109 955 307
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.