水星系統公司
US ˙ NasdaqGS ˙ US5893781089

SecurityMRCY / Mercury Systems, Inc.
InstitutionMan Group plc
Latest Disclosed Ownership144,724 shares
Latest Disclosed Value $ 10,551,827
Man Group plc reports 24.64% decrease in ownership of MRCY / Mercury Systems, Inc.

On May 15, 2026 - Man Group plc filed a 13F-HR form disclosing ownership of 144,724 shares of Mercury Systems, Inc. (US:MRCY) valued at $10,551,827 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 192,033 shares of Mercury Systems, Inc.. This represents a change in shares of -24.64% during the quarter. The current value of the position is $17,051,382 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.

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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 MERCURY SYS COM 589378108 144,724 -47,309 -24.64 10,552 -24.74 0.0191
2026-02-17 2025-12-31 13F MERCURY SYS COM 589378108 192,033 192,033 14,020 0.0238
2024-08-14 2024-06-30 13F MERCURY SYS COM 589378108 0 -29,395 -100.00 0 -100.00
2024-05-15 2024-03-31 13F MERCURY SYS COM 589378108 29,395 10,270 53.70 867 24.03 0.0022
2024-02-14 2023-12-31 13F MERCURY SYS COM 589378108 19,125 699 249.50 0.0019
2023-11-14 2023-09-30 13F MERCURY SYS COM 589378108 200 -12.66 0.0006
2023-08-14 2023-06-30 13F MERCURY SYS COM 589378108 6,649 230 -93.63 0.0007
2023-05-15 2023-03-31 13F MERCURY SYS COM 589378108 3,597 8.44 0.0128
2023-02-14 2022-12-31 13F MERCURY SYS COM 589378108 74,131 -34,267 -31.61 3,317 -24.65 0.0119
2022-11-14 2022-09-30 13F MERCURY SYS COM 589378108 108,398 4,401 -55.49 0.0204
2022-08-15 2022-06-30 13F MERCURY SYS COM 589378108 9,887 64.56 0.0419
2022-05-16 2022-03-31 13F MERCURY SYS COM 589378108 93,225 33,860 57.04 6,008 83.84 0.0209
2022-02-14 2021-12-31 13F MERCURY SYS COM 589378108 59,365 18,659 45.84 3,268 69.24 0.0105
2021-11-15 2021-09-30 13F MERCURY SYS COM 589378108 40,706 8,585 26.73 1,931 -9.30 0.0068
2021-08-16 2021-06-30 13F MERCURY SYS COM 589378108 32,121 -1,858 -5.47 2,129 -11.29 0.0075
2021-05-17 2021-03-31 13F MERCURY SYS COM 589378108 33,979 1,727 5.35 2,400 -15.49 0.0106
2021-02-16 2020-12-31 13F MERCURY SYS COM 589378108 32,252 -86,017 -72.73 2,840 -69.00 0.0125
2020-11-16 2020-09-30 13F MERCURY SYS COM 589378108 118,269 61,958 110.03 9,161 106.84 0.0360
2020-08-14 2020-06-30 13F MERCURY SYS COM 589378108 56,311 56,311 4,429 0.0223
2020-05-15 2020-03-31 13F MERCURY SYS COM 589378108 0 -3,328 -100.00 0 -100.00
2020-02-18 2019-12-31 13F MERCURY SYS COM 589378108 3,328 -90,104 -96.44 230 -96.97 0.0008
2019-11-14 2019-09-30 13F MERCURY SYS COM 589378108 93,432 64,833 226.70 7,584 276.94 0.0282
2019-08-14 2019-06-30 13F MERCURY SYS COM 589378108 28,599 28,599 2,012 0.0073
2019-02-14 2018-12-31 13F MERCURY SYS COM 589378108 0 -86,107 -100.00 0 -100.00
2018-11-14 2018-09-30 13F MERCURY SYS COM 589378108 86,107 71,180 476.85 4,763 738.56 0.0174
2018-08-14 2018-06-30 13F MERCURY SYS COM 589378108 14,927 14,927 568 0.0023
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.