Northrop Grumman Corporation
US ˙ NYSE ˙ US6668071029

SecurityNOC / Northrop Grumman Corporation
InstitutionWiley Bros.-aintree Capital, Llc
Latest Disclosed Ownership16,683 shares
Latest Disclosed Value $ 11,381,880
Wiley Bros.-aintree Capital, Llc reports 5.65% decrease in ownership of NOC / Northrop Grumman Corporation

On May 15, 2026 - Wiley Bros.-aintree Capital, Llc filed a 13F-HR form disclosing ownership of 16,683 shares of Northrop Grumman Corporation (US:NOC) valued at $11,381,810 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 17,682 shares of Northrop Grumman Corporation. This represents a change in shares of -5.65% during the quarter. The current value of the position is $8,776,259 USD.

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.

Upgrade to unlock premium data and export to Excel .

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 16,683 -999 -5.65 11,382 12.88 0.0563
2026-02-17 2025-12-31 13F NORTHROP GRUMMAN COM 666807102 17,682 2,235 14.47 10,082 7.12 0.0527
2025-11-14 2025-09-30 13F NORTHROP GRUMMAN COM 666807102 15,447 3,343 27.62 9,412 55.49 0.0603
2025-08-14 2025-06-30 13F NORTHROP GRUMMAN COM 666807102 12,104 6,025 99.11 6,054 94.44 0.0464
2025-05-15 2025-03-31 13F NORTHROP GRUMMAN COM 666807102 6,079 466 8.30 3,114 18.23 0.0331
2025-02-14 2024-12-31 13F NORTHROP GRUMMAN COM 666807102 5,613 1,933 52.53 2,634 35.51 0.0316
2024-11-14 2024-09-30 13F NORTHROP GRUMMAN COM 666807102 3,680 2,355 177.74 1,944 236.74 0.0375
2024-07-24 2024-06-30 13F NORTHROP GRUMMAN COM 666807102 1,325 871 191.85 578 165.90 0.0253
2024-04-11 2024-03-31 13F NORTHROP GRUMMAN COM 666807102 454 454 217 0.0300
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.