Kratos Defense & Security Solutions, Inc.
MX ˙ BMV ˙ US50077B2079
SecurityMX:KTOS / Kratos Defense & Security Solutions, Inc.
InstitutionRhumbline Advisers
Latest Disclosed Ownership530,185 shares
Latest Disclosed Value $ 37,383,316
Rhumbline Advisers reports 10.35% increase in ownership of KTOS / Kratos Defense & Security Solutions, Inc.

On May 12, 2026 - Rhumbline Advisers filed a 13F-HR form disclosing ownership of 530,185 shares of Kratos Defense & Security Solutions, Inc. (MX:KTOS) valued at $37,383,316 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 480,449 shares of Kratos Defense & Security Solutions, Inc.. This represents a change in shares of 10.35% 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 KRATOS DEFENSE & SEC SOLUTIONS COM COM 50077B207 530,185 49,736 10.35 37,383 2.50 0.0320
2026-02-13 2025-12-31 13F KRATOS DEFENSE & SEC SOLUTIONS COM COM 50077B207 480,449 -53,858 -10.08 36,471 -25.30 0.0295
2025-11-06 2025-09-30 13F KRATOS DEFENSE & SEC SOLUTIONS COM COM 50077B207 534,307 153,351 40.25 48,820 175.89 0.0392
2025-08-12 2025-06-30 13F KRATOS DEFENSE & SEC SOLUTIONS COM COM 50077B207 380,956 20,291 5.63 17,695 65.25 0.0152
2025-05-29 2025-03-31 13F/A-1 KRATOS DEFENSE & SEC SOLUTIONS COM COM 50077B207 360,665 139,725 63.24 10,708 83.73 0.0100
2025-04-08 2025-03-31 13F KRATOS DEFENSE & SEC SOLUTIONS COM COM 50077B207 360,665 139,725 10,708 0.0100
2025-05-29 2024-12-31 13F/A-1 KRATOS DEFENSE & SEC SOLUTIONS COM COM 50077B207 220,940 -3,202 -1.43 5,828 11.60 0.0052
2025-01-30 2024-12-31 13F KRATOS DEFENSE & SEC SOLUTIONS COM COM 50077B207 220,940 -3,202 5,828 0.0052
2024-11-12 2024-09-30 13F KRATOS DEFENSE & SEC SOLUTIONS COM COM 50077B207 224,142 -5,917 -2.57 5,222 13.45 0.0047
2024-08-01 2024-06-30 13F KRATOS DEFENSE & SEC SOLUTIONS COM COM 50077B207 230,059 1,092 0.48 4,603 9.39 0.0043
2024-05-09 2024-03-31 13F KRATOS DEFENSE & SEC SOLUTIONS COM COM 50077B207 228,967 19,566 9.34 4,208 -0.94 0.0040
2024-02-08 2023-12-31 13F KRATOS DEFENSE & SEC SOLUTIONS COM COM 50077B207 209,401 2,853 1.38 4,249 36.94 0.0045
2023-11-09 2023-09-30 13F KRATOS DEFENSE & SEC SOLUTIONS COM COM 50077B207 206,548 -17,799 -7.93 3,102 -3.57 0.0036
2023-08-08 2023-06-30 13F KRATOS DEFENSE & SEC SOLUTIONS COM COM 50077B207 224,347 24,154 12.07 3,217 160,750.00 0.0036
2023-05-11 2023-03-31 13F KRATOS DEFENSE & SEC SOLUTIONS COM 50077B207 200,193 6,838 3.54 3 -99.90 0.0033
2023-02-14 2022-12-31 13F KRATOS DEFENSE & SEC SOLUTIONS COM 50077B207 193,355 -84 -0.04 1,995 1.53 0.0027
2022-11-10 2022-09-30 13F KRATOS DEFENSE & SEC SOLUTIONS COM 50077B207 193,439 12,545 6.94 1,965 -21.74 0.0029
2022-08-11 2022-06-30 13F KRATOS DEFENSE & SEC SOLUTIONS COM 50077B207 180,894 25,460 16.38 2,511 -21.11 0.0037
2022-05-12 2022-03-31 13F KRATOS DEFENSE & SEC SOLUTIONS COM 50077B207 155,434 -11,877 -7.10 3,183 -1.94 0.0041
2022-02-10 2021-12-31 13F KRATOS DEFENSE & SEC SOLUTIONS COM 50077B207 167,311 -1,142 -0.68 3,246 -13.62 0.0040
2021-11-12 2021-09-30 13F KRATOS DEFENSE & SEC SOLUTIONS COM 50077B207 168,453 4,514 2.75 3,758 -19.55 0.0051
2021-08-05 2021-06-30 13F KRATOS DEFENSE & SEC SOLUTIONS COM 50077B207 163,939 31,841 24.10 4,671 29.61 0.0061
2021-05-06 2021-03-31 13F KRATOS DEFENSE & SEC SOLUTIONS COM 50077B207 132,098 -15,856 -10.72 3,604 -11.19 0.0049
2021-02-10 2020-12-31 13F KRATOS DEFENSE & SEC SOLUTIONS COM 50077B207 147,954 7,902 5.64 4,058 50.30 0.0056
2020-11-12 2020-09-30 13F KRATOS DEFENSE & SEC SOLUTIONS COM 50077B207 140,052 -12,402 -8.13 2,700 13.30 0.0042
2020-08-13 2020-06-30 13F KRATOS DEFENSE & SEC SOLUTIONS COM 50077B207 152,454 29,563 24.06 2,383 40.09 0.0040
2020-05-06 2020-03-31 13F KRATOS DEFENSE & SEC SOLUTIONS COM 50077B207 122,891 1,316 1.08 1,701 -22.33 0.0036
2020-02-05 2019-12-31 13F KRATOS DEFENSE & SEC SOLUTIONS COM 50077B207 121,575 1,723 1.44 2,190 -1.75 0.0037
2019-10-23 2019-09-30 13F KRATOS DEFENSE & SEC SOLUTIONS COM 50077B207 119,852 -325 -0.27 2,229 -18.97 0.0041
2019-08-14 2019-06-30 13F KRATOS DEFENSE & SEC SOLUTIONS COM 50077B207 120,177 -4,266 -3.43 2,751 41.44 0.0052
2019-05-01 2019-03-31 13F KRATOS DEFENSE & SEC SOLUTIONS COM 50077B207 124,443 -84 -0.07 1,945 10.83 0.0038
2019-01-31 2018-12-31 13F KRATOS DEFENSE & SEC SOLUTIONS COM 50077B207 124,527 38,689 45.07 1,755 38.30 0.0038
2018-11-07 2018-09-30 13F KRATOS DEFENSE & SEC SOLUTIONS COM 50077B207 85,838 -1,810 -2.07 1,269 25.77 0.0025
2018-08-06 2018-06-30 13F KRATOS DEFENSE & SEC SOLUTIONS COM 50077B207 87,648 6,042 7.40 1,009 20.12 0.0020
2018-05-02 2018-03-31 13F KRATOS DEFENSE & SEC SOLUTIONS COM 50077B207 81,606 3,806 4.89 840 1.94 0.0018
2018-02-09 2017-12-31 13F KRATOS DEFENSE & SEC SOLUTIONS COM 50077B207 77,800 -13,608 -14.89 824 -31.10 0.0017
2017-11-06 2017-09-30 13F KRATOS DEFENSE & SEC SOLUTIONS COM 50077B207 91,408 715 0.79 1,196 11.05 0.0026
2017-08-02 2017-06-30 13F KRATOS DEFENSE & SEC SOLUTIONS COM 50077B207 90,693 17,270 23.52 1,077 88.62 0.0025
2017-05-02 2017-03-31 13F KRATOS DEFENSE & SEC SOLUTIONS COM 50077B207 73,423 15,640 27.07 571 33.41 0.0013
2017-01-27 2016-12-31 13F KRATOS DEFENSE & SEC SOLUTIONS COM 50077B207 57,783 2,261 4.07 428 11.75 0.0011
2016-11-08 2016-09-30 13F KRATOS DEFENSE & SEC SOLUTIONS COM 50077B207 55,522 420 0.76 383 69.47 0.0011
2016-08-11 2016-06-30 13F KRATOS DEFENSE & SEC SOLUTIONS COM 50077B207 55,102 -17,593 -24.20 226 -37.22 0.0007
2016-05-02 2016-03-31 13F KRATOS DEFENSE + SECURITY COMM COM 50077B207 72,695 6,370 9.60 360 32.35 0.0011
2016-02-03 2015-12-31 13F KRATOS DEFENSE + SECURITY COMM COM 50077B207 66,325 2,645 4.15 272 1.12 0.0009
2015-11-04 2015-09-30 13F KRATOS DEFENSE + SECURITY COMM COM 50077B207 63,680 6,209 10.80 269 -25.69 0.0009
2015-08-04 2015-06-30 13F KRATOS DEFENSE + SECURITY COMM COM 50077B207 57,471 -8,080 -12.33 362 0.00 0.0012
2015-05-12 2015-03-31 13F KRATOS DEFENSE + SECURITY COMM COM 50077B207 65,551 6,025 10.12 362 21.07 0.0010
2015-02-06 2014-12-31 13F KRATOS DEFENSE + SECURITY COMM COM 50077B207 59,526 5,275 9.72 299 -16.01 0.0009
2014-11-12 2014-09-30 13F KRATOS DEFENSE + SECURITY COMM COM 50077B207 54,251 1,900 3.63 356 -12.75 0.0011
2014-08-06 2014-06-30 13F KRATOS DEFENSE + SECURITY COMM COM 50077B207 52,351 -12,440 -19.20 408 -16.56 0.0012
2014-05-06 2014-03-31 13F KRATOS DEFENSE + SECURITY COMM COM 50077B207 64,791 -4,344 -6.28 489 -7.91 0.0015
2014-02-03 2013-12-31 13F KRATOS DEFENSE + SECURITY COMM COM 50077B207 69,135 700 1.02 531 -6.35 0.0016
2013-11-05 2013-09-30 13F KRATOS DEFENSE + SECURITY COMM COM 50077B207 68,435 -3,020 -4.23 567 22.46 0.0018
2013-08-07 2013-06-30 13F KRATOS DEFENSE + SECURITY COMM COM 50077B207 71,455 71,455 463 0.0015
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.