Northrop Grumman Corporation
MX ˙ BMV ˙ US6668071029
SecurityMX:NOC / Northrop Grumman Corporation
InstitutionVestmark Advisory Solutions, Inc.
Latest Disclosed Ownership7,794 shares
Latest Disclosed Value $ 5,318,748
Vestmark Advisory Solutions, Inc. reports 13.50% increase in ownership of NOC / Northrop Grumman Corporation

On May 15, 2026 - Vestmark Advisory Solutions, Inc. filed a 13F-HR form disclosing ownership of 7,794 shares of Northrop Grumman Corporation (MX:NOC) valued at $5,318,748 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 6, 2026 disclosing 6,867 shares of Northrop Grumman Corporation. This represents a change in shares of 13.50% 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 NORTHROP GRUMMAN COM 666807102 7,794 927 13.50 5,319 35.84 0.0366
2026-02-06 2025-12-31 13F NORTHROP GRUMMAN COM 666807102 6,867 303 4.62 3,916 -2.10 0.0528
2025-11-10 2025-09-30 13F NORTHROP GRUMMAN COM 666807102 6,564 1,291 24.48 4,000 51.71 0.0762
2025-08-06 2025-06-30 13F NORTHROP GRUMMAN COM 666807102 5,273 -4,979 -48.57 2,636 -49.78 0.0381
2025-05-13 2025-03-31 13F NORTHROP GRUMMAN COM 666807102 10,252 4,877 90.73 5,249 108.13 0.1352
2025-02-06 2024-12-31 13F NORTHROP GRUMMAN COM 666807102 5,375 33 0.62 2,522 -10.57 0.0869
2024-11-14 2024-09-30 13F NORTHROP GRUMMAN COM 666807102 5,342 -1,828 -25.50 2,821 -9.76 0.1050
2024-08-12 2024-06-30 13F NORTHROP GRUMMAN COM 666807102 7,170 229 3.30 3,126 -5.93 0.1305
2024-05-15 2024-03-31 13F NORTHROP GRUMMAN COM 666807102 6,941 -3,233 -31.78 3,322 -26.00 0.1431
2024-02-06 2023-12-31 13F NORTHROP GRUMMAN COM 666807102 10,174 5,524 118.80 4,490 119.40 0.2281
2023-11-06 2023-09-30 13F NORTHROP GRUMMAN COM 666807102 4,650 -3,661 -44.05 2,047 -45.97 0.1488
2023-08-07 2023-06-30 13F NORTHROP GRUMMAN COM 666807102 8,311 293 3.65 3,788 2.30 0.1443
2023-05-09 2023-03-31 13F NORTHROP GRUMMAN COM 666807102 8,018 317 4.12 3,703 -11.90 0.1604
2023-01-20 2022-12-31 13F NORTHROP GRUMMAN COM 666807102 7,701 3,110 67.74 4,203 94.63 0.2047
2022-11-03 2022-09-30 13F NORTHROP GRUMMAN COM 666807102 4,591 1,521 49.54 2,159 46.97 0.1203
2022-08-04 2022-06-30 13F NORTHROP GRUMMAN COM 666807102 3,070 340 12.45 1,469 20.31 0.0839
2022-04-27 2022-03-31 13F NORTHROP GRUMMAN COM 666807102 2,730 -719 -20.85 1,221 -8.54 0.0691
2022-01-31 2021-12-31 13F NORTHROP GRUMMAN COM 666807102 3,449 60 1.77 1,335 9.34 0.0753
2021-11-15 2021-09-30 13F NORTHROP GRUMMAN COM 666807102 3,389 85 2.57 1,221 1.67 0.0827
2021-08-09 2021-06-30 13F NORTHROP GRUMMAN COM 666807102 3,304 46 1.41 1,201 13.95 0.0855
2021-05-10 2021-03-31 13F NORTHROP GRUMMAN COM 666807102 3,258 263 8.78 1,054 15.44 0.0935
2021-02-04 2020-12-31 13F NORTHROP GRUMMAN COM 666807102 2,995 1,885 169.82 913 160.86 0.1024
2020-10-19 2020-09-30 13F NORTHROP GRUMMAN COM 666807102 1,110 -489 -30.58 350 -28.72 0.0470
2020-08-13 2020-06-30 13F NORTHROP GRUMMAN COM 666807102 1,599 202 14.46 491 16.08 0.0760
2020-05-06 2020-03-31 13F NORTHROP GRUMMAN COM 666807102 1,397 1,397 423 0.0827
2020-02-14 2019-12-31 13F NORTHROP GRUMMAN COM 666807102 0 -925 -100.00 0 -100.00
2019-11-05 2019-09-30 13F NORTHROP GRUMMAN COM 666807102 925 -298 -24.37 347 -12.15 0.0563
2019-08-20 2019-06-30 13F NORTHROP GRUMMAN COM 666807102 1,223 -438 -26.37 395 -11.83 0.0676
2019-05-14 2019-03-31 13F NORTHROP GRUMMAN COM 666807102 1,661 1,661 448 0.0799
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.