Northrop Grumman Corporation
MX ˙ BMV ˙ US6668071029
SecurityMX:NOC / Northrop Grumman Corporation
InstitutionFactory Mutual Insurance Co
Latest Disclosed Ownership46,300 shares
Latest Disclosed Value $ 31,587,712
Factory Mutual Insurance Co reports 2.89% increase in ownership of NOC / Northrop Grumman Corporation

On May 5, 2026 - Factory Mutual Insurance Co filed a 13F-HR form disclosing ownership of 46,300 shares of Northrop Grumman Corporation (MX:NOC) valued at $31,587,712 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 23, 2026 disclosing 45,000 shares of Northrop Grumman Corporation. This represents a change in shares of 2.89% 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)
2026-05-05 2026-03-31 13F NORTHROP GRUMMAN COM 666807102 46,300 1,300 2.89 31,588 23.10 0.3554
2026-01-23 2025-12-31 13F NORTHROP GRUMMAN COM 666807102 45,000 -1,300 -2.81 25,659 -9.05 0.2601
2025-11-10 2025-09-30 13F NORTHROP GRUMMAN COM 666807102 46,300 -500 -1.07 28,212 20.56 0.2747
2025-08-07 2025-06-30 13F NORTHROP GRUMMAN COM 666807102 46,800 -18,400 -28.22 23,399 -29.91 0.2558
2025-04-17 2025-03-31 13F NORTHROP GRUMMAN COM 666807102 65,200 0 0.00 33,383 9.11 0.3873
2025-01-24 2024-12-31 13F NORTHROP GRUMMAN COM 666807102 65,200 0 0.00 30,598 -11.13 0.3309
2024-10-10 2024-09-30 13F NORTHROP GRUMMAN COM 666807102 65,200 -900 -1.36 34,430 19.48 0.3561
2024-07-23 2024-06-30 13F NORTHROP GRUMMAN COM 666807102 66,100 -900 -1.34 28,816 -10.15 0.3283
2024-04-12 2024-03-31 13F NORTHROP GRUMMAN COM 666807102 67,000 -1,900 -2.76 32,070 -0.57 0.3684
2024-01-23 2023-12-31 13F NORTHROP GRUMMAN COM 666807102 68,900 0 0.00 32,255 6.35 0.4006
2023-11-07 2023-09-30 13F NORTHROP GRUMMAN COM 666807102 68,900 11,300 19.62 30,329 15.52 0.4231
2023-07-27 2023-06-30 13F NORTHROP GRUMMAN COM 666807102 57,600 0 0.00 26,254 -1.28 0.3873
2023-05-08 2023-03-31 13F NORTHROP GRUMMAN COM 666807102 57,600 -13,100 -18.53 26,595 -31.05 0.4156
2023-02-02 2022-12-31 13F NORTHROP GRUMMAN COM 666807102 70,700 -15,400 -17.89 38,575 -4.74 0.5834
2022-11-04 2022-09-30 13F NORTHROP GRUMMAN COM 666807102 86,100 -22,800 -20.94 40,494 -22.30 0.6648
2022-08-08 2022-06-30 13F NORTHROP GRUMMAN COM 666807102 108,900 -4,500 -3.97 52,116 2.76 0.8544
2022-05-13 2022-03-31 13F NORTHROP GRUMMAN COM 666807102 113,400 -44,300 -28.09 50,715 -19.45 0.6858
2022-02-10 2021-12-31 13F NORTHROP GRUMMAN COM 666807102 157,700 31,564 25.02 62,959 38.59 0.9090
2021-11-12 2021-09-30 13F NORTHROP GRUMMAN COM 666807102 126,136 -2,200 -1.71 45,428 -2.60 0.5674
2021-07-14 2021-06-30 13F NORTHROP GRUMMAN COM 666807102 128,336 -5,188 -3.89 46,641 7.93 0.5704
2021-05-10 2021-03-31 13F NORTHROP GRUMMAN COM 666807102 133,524 -2,576 -1.89 43,213 4.20 0.5528
2021-02-17 2020-12-31 13F NORTHROP GRUMMAN COM 666807102 136,100 -9,300 -6.40 41,473 -9.59 0.5607
2020-10-19 2020-09-30 13F NORTHROP GRUMMAN COM 666807102 145,400 0 0.00 45,873 2.62 0.7424
2020-07-13 2020-06-30 13F NORTHROP GRUMMAN COM 666807102 145,400 -2,500 -1.69 44,701 -0.10 0.7666
2020-04-16 2020-03-31 13F NORTHROP GRUMMAN COM 666807102 147,900 -1,400 -0.94 44,747 -12.87 0.8498
2020-01-28 2019-12-31 13F NORTHROP GRUMMAN COM 666807102 149,300 0 0.00 51,354 -8.22 0.7572
2019-10-22 2019-09-30 13F NORTHROP GRUMMAN COM 666807102 149,300 -31,900 -17.60 55,956 -4.43 0.8651
2019-07-16 2019-06-30 13F NORTHROP GRUMMAN COM 666807102 181,200 1,100 0.61 58,547 18.62 0.7000
2019-04-09 2019-03-31 13F NORTHROP GRUMMAN COM 666807102 180,100 300 0.17 49,357 12.09 0.5828
2019-01-14 2018-12-31 13F NORTHROP GRUMMAN COM 666807102 179,800 0 0.00 44,034 -22.83 0.5650
2018-10-10 2018-09-30 13F NORTHROP GRUMMAN COM 666807102 179,800 5,600 3.21 57,063 6.46 0.5923
2018-07-19 2018-06-30 13F NORTHROP GRUMMAN COM 666807102 174,200 2,900 1.69 53,601 -10.37 0.5751
2018-04-05 2018-03-31 13F NORTHROP GRUMMAN COM 666807102 171,300 0 0.00 59,804 13.75 0.6550
2018-01-16 2017-12-31 13F NORTHROP GRUMMAN COM 666807102 171,300 0 0.00 52,574 6.67 0.5500
2017-10-11 2017-09-30 13F NORTHROP GRUMMAN COM 666807102 171,300 2,000 1.18 49,286 13.40 0.5403
2017-07-10 2017-06-30 13F NORTHROP GRUMMAN COM 666807102 169,300 0 0.00 43,461 7.93 0.5027
2017-04-21 2017-03-31 13F NORTHROP GRUMMAN COM 666807102 169,300 0 0.00 40,266 1.23 0.4769
2017-01-19 2016-12-31 13F NORTHROP GRUMMAN COM 666807102 169,300 0 0.00 39,778 9.82 0.4720
2016-10-26 2016-09-30 13F NORTHROP GRUMMAN COM 666807102 169,300 0 0.00 36,222 -3.75 0.4479
2016-07-12 2016-06-30 13F NORTHROP GRUMMAN COM 666807102 169,300 0 0.00 37,632 12.32 0.4958
2016-04-27 2016-03-31 13F NORTHROP GRUMMAN COM 666807102 169,300 0 0.00 33,504 4.81 0.4336
2016-01-14 2015-12-31 13F NORTHROP GRUMMAN COM 666807102 169,300 0 0.00 31,966 13.78 0.4300
2015-10-14 2015-09-30 13F NORTHROP GRUMMAN COM 666807102 169,300 20,000 13.40 28,095 18.63 0.3843
2015-07-21 2015-06-30 13F NORTHROP GRUMMAN COM 666807102 149,300 0 0.00 23,683 -1.44 0.3093
2015-04-13 2015-03-31 13F NORTHROP GRUMMAN COM 666807102 149,300 0 0.00 24,030 9.20 0.3166
2015-01-12 2014-12-31 13F NORTHROP GRUMMAN COM 666807102 149,300 0 0.00 22,005 11.86 0.2965
2014-11-04 2014-09-30 13F NORTHROP GRUMMAN COM 666807102 149,300 -3,100 -2.03 19,672 7.90 0.2721
2014-08-12 2014-06-30 13F NORTHROP GRUMMAN COM 666807102 152,400 0 0.00 18,232 -3.04 0.2493
2014-05-15 2014-03-31 13F NORTHROP GRUMMAN COM 666807102 152,400 -20,000 -11.60 18,803 -4.84 0.2722
2014-02-04 2013-12-31 13F NORTHROP GRUMMAN COM 666807102 172,400 -7,000 -3.90 19,759 15.62 0.2906
2013-10-16 2013-09-30 13F NORTHROP GRUMMAN COM 666807102 179,400 -30,000 -14.33 17,090 -1.43 0.2710
2013-07-25 2013-06-30 13F NORTHROP GRUMMAN COM 666807102 209,400 209,400 17,338 0.2842
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.