Northrop Grumman Corporation
MX ˙ BMV ˙ US6668071029
SecurityMX:NOC / Northrop Grumman Corporation
InstitutionRhumbline Advisers
Latest Disclosed Ownership236,146 shares
Latest Disclosed Value $ 161,108,148
Rhumbline Advisers reports 9.06% decrease in ownership of NOC / Northrop Grumman Corporation

On May 12, 2026 - Rhumbline Advisers filed a 13F-HR form disclosing ownership of 236,146 shares of Northrop Grumman Corporation (MX:NOC) valued at $161,108,148 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 259,666 shares of Northrop Grumman Corporation. This represents a change in shares of -9.06% 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 NORTHROP GRUMMAN CORP COM COM 666807102 236,146 -23,520 -9.06 161,108 8.81 0.1378
2026-02-13 2025-12-31 13F NORTHROP GRUMMAN CORP COM COM 666807102 259,666 -338 -0.13 148,064 -6.54 0.1197
2025-11-06 2025-09-30 13F NORTHROP GRUMMAN CORP COM COM 666807102 260,004 7,803 3.09 158,426 25.64 0.1272
2025-08-12 2025-06-30 13F NORTHROP GRUMMAN CORP COM COM 666807102 252,201 -3,464 -1.35 126,095 -3.67 0.1080
2025-05-29 2025-03-31 13F/A-1 NORTHROP GRUMMAN CORP COM COM 666807102 255,665 8,009 3.23 130,903 12.63 0.1224
2025-04-08 2025-03-31 13F NORTHROP GRUMMAN CORP COM COM 666807102 255,665 8,009 130,903 0.1224
2025-05-29 2024-12-31 13F/A-1 NORTHROP GRUMMAN CORP COM COM 666807102 247,656 -2,486 -0.99 116,222 -12.01 0.1040
2025-01-30 2024-12-31 13F NORTHROP GRUMMAN CORP COM COM 666807102 247,656 -2,486 116,222 0.1040
2024-11-12 2024-09-30 13F NORTHROP GRUMMAN CORP COM COM 666807102 250,142 -8,231 -3.19 132,092 17.27 0.1192
2024-08-01 2024-06-30 13F NORTHROP GRUMMAN CORP COM COM 666807102 258,373 -4,643 -1.77 112,638 -10.53 0.1059
2024-05-09 2024-03-31 13F NORTHROP GRUMMAN CORP COM COM 666807102 263,016 -269 -0.10 125,895 2.14 0.1209
2024-02-08 2023-12-31 13F NORTHROP GRUMMAN CORP COM COM 666807102 263,285 -4,464 -1.67 123,254 4.58 0.1292
2023-11-09 2023-09-30 13F NORTHROP GRUMMAN CORP COM COM 666807102 267,749 5,072 1.93 117,860 -1.56 0.1368
2023-08-08 2023-06-30 13F NORTHROP GRUMMAN CORP COM COM 666807102 262,677 2,216 0.85 119,728 99,673.33 0.1341
2023-05-11 2023-03-31 13F NORTHROP GRUMMAN CORP COM COM 666807102 260,461 -17,391 -6.26 120 -99.92 0.1484
2023-02-14 2022-12-31 13F NORTHROP GRUMMAN CORP COM COM 666807102 277,852 13,031 4.92 151,599 21.72 0.2038
2022-11-10 2022-09-30 13F NORTHROP GRUMMAN CORP COM COM 666807102 264,821 38,342 16.93 124,551 14.91 0.1855
2022-08-11 2022-06-30 13F NORTHROP GRUMMAN CORP COM COM 666807102 226,479 -5,499 -2.37 108,386 4.47 0.1582
2022-05-12 2022-03-31 13F NORTHROP GRUMMAN CORP COM COM 666807102 231,978 -17,978 -7.19 103,745 7.23 0.1335
2022-02-10 2021-12-31 13F NORTHROP GRUMMAN CORP COM COM 666807102 249,956 1,975 0.80 96,750 8.33 0.1186
2021-11-12 2021-09-30 13F NORTHROP GRUMMAN CORP COM COM 666807102 247,981 -7,479 -2.93 89,310 -3.80 0.1209
2021-08-05 2021-06-30 13F NORTHROP GRUMMAN CORP COM COM 666807102 255,460 -18,854 -6.87 92,842 4.58 0.1218
2021-05-06 2021-03-31 13F NORTHROP GRUMMAN CORP COM COM 666807102 274,314 19,391 7.61 88,779 14.29 0.1206
2021-02-10 2020-12-31 13F NORTHROP GRUMMAN CORP COM COM 666807102 254,923 -4,793 -1.85 77,680 -5.20 0.1072
2020-11-12 2020-09-30 13F NORTHROP GRUMMAN CORP COM COM 666807102 259,716 -20,724 -7.39 81,938 -4.96 0.1284
2020-08-13 2020-06-30 13F NORTHROP GRUMMAN CORP COM COM 666807102 280,440 10,159 3.76 86,218 5.43 0.1440
2020-05-06 2020-03-31 13F NORTHROP GRUMMAN CORP COM COM 666807102 270,281 5,884 2.23 81,774 -10.08 0.1714
2020-02-05 2019-12-31 13F NORTHROP GRUMMAN CORP COM COM 666807102 264,397 -3,880 -1.45 90,945 -9.55 0.1521
2019-10-23 2019-09-30 13F NORTHROP GRUMMAN CORP COM COM 666807102 268,277 -4,814 -1.76 100,548 13.95 0.1837
2019-08-14 2019-06-30 13F NORTHROP GRUMMAN CORP COM COM 666807102 273,091 -5,531 -1.99 88,238 17.47 0.1656
2019-05-01 2019-03-31 13F NORTHROP GRUMMAN CORP COM COM 666807102 278,622 1,977 0.71 75,116 10.87 0.1455
2019-01-31 2018-12-31 13F NORTHROP GRUMMAN CORP COM COM 666807102 276,645 -13,134 -4.53 67,750 -26.33 0.1474
2018-11-07 2018-09-30 13F NORTHROP GRUMMAN CORP COM COM 666807102 289,779 -9,610 -3.21 91,967 -0.17 0.1776
2018-08-06 2018-06-30 13F NORTHROP GRUMMAN CORP COM COM 666807102 299,389 2,246 0.76 92,122 -11.20 0.1858
2018-05-02 2018-03-31 13F NORTHROP GRUMMAN CORP COM COM 666807102 297,143 -2,432 -0.81 103,739 12.83 0.2167
2018-02-09 2017-12-31 13F NORTHROP GRUMMAN CORP COM COM 666807102 299,575 6,733 2.30 91,943 9.12 0.1867
2017-11-06 2017-09-30 13F NORTHROP GRUMMAN CORP COM COM 666807102 292,842 1,906 0.66 84,257 12.81 0.1832
2017-08-02 2017-06-30 13F NORTHROP GRUMMAN CORP COM COM 666807102 290,936 -755 -0.26 74,686 7.65 0.1705
2017-05-02 2017-03-31 13F NORTHROP GRUMMAN CORP COM COM 666807102 291,691 22,450 8.34 69,376 10.79 0.1621
2017-01-27 2016-12-31 13F NORTHROP GRUMMAN CORP COM COM 666807102 269,241 9,840 3.79 62,620 12.83 0.1587
2016-11-08 2016-09-30 13F NORTHROP GRUMMAN CORP COM COM 666807102 259,401 9,931 3.98 55,499 0.08 0.1529
2016-08-11 2016-06-30 13F NORTHROP GRUMMAN CORP COM COM 666807102 249,470 -4,605 -1.81 55,452 10.28 0.1643
2016-05-02 2016-03-31 13F NORTHROP GRUMMAN CORP COMMON S COM 666807102 254,075 3,636 1.45 50,281 6.34 0.1560
2016-02-03 2015-12-31 13F NORTHROP GRUMMAN CORP COMMON S COM 666807102 250,439 -5,946 -2.32 47,285 11.14 0.1522
2015-11-04 2015-09-30 13F NORTHROP GRUMMAN CORP COMMON S COM 666807102 256,385 -3,458 -1.33 42,547 3.22 0.1447
2015-08-04 2015-06-30 13F NORTHROP GRUMMAN CORP COMMON S COM 666807102 259,843 -43,349 -14.30 41,219 -15.54 0.1314
2015-05-12 2015-03-31 13F NORTHROP GRUMMAN CORP COMMON S COM 666807102 303,192 -7,512 -2.42 48,802 6.57 0.1408
2015-02-06 2014-12-31 13F NORTHROP GRUMMAN CORP COMMON S COM 666807102 310,704 -15,379 -4.72 45,795 6.59 0.1330
2014-11-12 2014-09-30 13F NORTHROP GRUMMAN CORP COMMON S COM 666807102 326,083 -8,438 -2.52 42,965 7.36 0.1291
2014-08-06 2014-06-30 13F NORTHROP GRUMMAN CORP COMMON S COM 666807102 334,521 -5,718 -1.68 40,019 -4.67 0.1174
2014-05-06 2014-03-31 13F NORTHROP GRUMMAN CORP COMMON S COM 666807102 340,239 -10,395 -2.96 41,979 4.46 0.1245
2014-02-03 2013-12-31 13F NORTHROP GRUMMAN CORP COMMON S COM 666807102 350,634 -26,445 -7.01 40,186 11.87 0.1185
2013-11-05 2013-09-30 13F NORTHROP GRUMMAN CORP COMMON S COM 666807102 377,079 -7,316 -1.90 35,921 12.86 0.1113
2013-08-07 2013-06-30 13F NORTHROP GRUMMAN CORP COMMON S COM 666807102 384,395 384,395 31,828 0.1023
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.