Parsons Corporation
US ˙ NYSE ˙ US70202L1026

SecurityPSN / Parsons Corporation
InstitutionD. E. Shaw & Co., Inc.
ManagerDE Shaw
Latest Disclosed Ownership56,643 shares
Latest Disclosed Value $ 3,068,351
D. E. Shaw & Co., Inc. reports 39.46% increase in ownership of PSN / Parsons Corporation

On May 15, 2026 - D. E. Shaw & Co., Inc. filed a 13F-HR form disclosing ownership of 56,643 shares of Parsons Corporation (US:PSN) valued at $3,068,351 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 40,615 shares of Parsons Corporation. This represents a change in shares of 39.46% during the quarter. The current value of the position is $3,395,748 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 PARSONS CORP DEL COM 70202L102 56,643 16,028 39.46 3,068 22.23 0.0018
2026-02-17 2025-12-31 13F PARSONS CORP DEL COM 70202L102 40,615 -16,107 -28.40 2,510 -46.63 0.0014
2025-11-14 2025-09-30 13F PARSONS CORP DEL COM 70202L102 56,722 -81,462 -58.95 4,703 -52.58 0.0027
2025-08-14 2025-06-30 13F PARSONS CORP DEL COM 70202L102 138,184 -128,787 -48.24 9,917 -37.26 0.0070
2025-05-15 2025-03-31 13F PARSONS CORP DEL COM 70202L102 266,971 -188,133 -41.34 15,807 -62.35 0.0141
2025-02-14 2024-12-31 13F PARSONS CORP DEL COM 70202L102 455,104 -69,523 -13.25 41,983 -22.82 0.0308
2024-11-14 2024-09-30 13F PARSONS CORP DEL COM 70202L102 524,627 -237,536 -31.17 54,393 -12.76 0.0467
2024-08-14 2024-06-30 13F PARSONS CORP DEL COM 70202L102 762,163 -116,510 -13.26 62,353 -14.45 0.0583
2024-05-15 2024-03-31 13F PARSONS CORP DEL COM 70202L102 878,673 209,038 31.22 72,886 73.57 0.0624
2024-02-14 2023-12-31 13F PARSONS CORP DEL COM 70202L102 669,635 151,369 29.21 41,993 49.08 0.0367
2023-11-14 2023-09-30 13F PARSONS CORP DEL COM 70202L102 518,266 292,313 129.37 28,168 158.96 0.0294
2023-08-14 2023-06-30 13F PARSONS CORP DEL COM 70202L102 225,953 -32,128 -12.45 10,877 -5.79 0.0111
2023-05-15 2023-03-31 13F PARSONS CORP DEL COM 70202L102 258,081 -40,126 -13.46 11,547 -16.28 0.0124
2023-02-14 2022-12-31 13F PARSONS CORP DEL COM 70202L102 298,207 237,527 391.44 13,792 479.74 0.0152
2022-11-14 2022-09-30 13F PARSONS CORP DEL COM 70202L102 60,680 -49,479 -44.92 2,379 -46.58 0.0028
2022-08-15 2022-06-30 13F PARSONS CORP DEL COM 70202L102 110,159 71,058 181.73 4,453 194.32 0.0052
2022-05-16 2022-03-31 13F PARSONS CORP DEL COM 70202L102 39,101 22,646 137.62 1,513 173.10 0.0014
2022-02-14 2021-12-31 13F PARSONS CORP DEL COM 70202L102 16,455 2,601 18.77 554 18.38 0.0005
2021-11-15 2021-09-30 13F PARSONS CORP DEL COM 70202L102 13,854 -2,239 -13.91 468 -26.07 0.0004
2021-08-16 2021-06-30 13F PARSONS CORP DEL COM 70202L102 16,093 10,746 200.97 633 193.06 0.0005
2021-05-17 2021-03-31 13F PARSONS COM 70202L102 5,347 -31,985 -85.68 216 -84.11 0.0002
2021-02-16 2020-12-31 13F PARSONS COM 70202L102 37,332 30,054 412.94 1,359 456.97 0.0012
2020-11-16 2020-09-30 13F PARSONS COM 70202L102 7,278 -43,097 -85.55 244 -86.64 0.0002
2020-08-14 2020-06-30 13F PARSONS COM 70202L102 50,375 -17,837 -26.15 1,826 -16.24 0.0022
2020-05-15 2020-03-31 13F PARSONS COM 70202L102 68,212 -13,560 -16.58 2,180 -35.43 0.0034
2020-02-14 2019-12-31 13F PARSONS COM 70202L102 81,772 53,676 191.04 3,376 264.19 0.0039
2019-11-14 2019-09-30 13F PARSONS COM 70202L102 28,096 -6,341 -18.41 927 -26.95 0.0011
2019-08-14 2019-06-30 13F PARSONS COM 70202L102 34,437 34,437 1,269 0.0016
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.