Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
691 institutional managers reported holding KTOS for the quarter ended Mar 31, 2026. Together they hold about 92% of shares outstanding; the top 10 hold 48%. 125 opened new positions; 93 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| BlackRock | 31.66M | 17.65% | $2.23B | added +11.7% | ≤2013 |
| Vanguard Group | 18.49M | 10.31% | $1.30B | added +12% | ≤2013 |
| State Street | 8.91M | 4.97% | $628.3M | added +8.8% | ≤2013 |
| Geode Capital | 5.26M | 2.93% | $371.1M | added +18.4% | ≤2013 |
| Invesco | 5.14M | 2.86% | $362.2M | added +90.1% | ≤2013 |
| Franklin Resources | 3.98M | 2.22% | $280.4M | unchanged | 2019 Q4 |
| ARK Investment Management | 3.49M | 1.95% | $246.1M | added +1.1% | 2018 Q3 |
| VAN ECK Associates CORP | 3.09M | 1.72% | $218.1M | added +17.5% | 2023 Q1 |
| Nomura Asset Management International INC. | 2.78M | 1.55% | $196.1M | added +7.8% | 2025 Q4 |
| Hood River Capital Management LLC | 2.71M | 1.51% | $191.4M | trimmed -1.1% | 2023 Q3 |
| First Trust Advisors LP | 2.70M | 1.51% | $190.5M | trimmed -5.3% | 2019 Q2 |
| Jericho Capital Asset Management L.p. (focused) | 2.65M | 1.48% | $186.8M | opened | 2026 Q1 |
| Wellington Management | 2.60M | 1.45% | $182.9M | added +585.5% | 2025 Q3 |
| Dimensional Fund Advisors | 2.59M | 1.45% | $182.9M | trimmed -8.2% | ≤2013 |
| Morgan Stanley | 2.51M | 1.40% | $177.1M | trimmed -24.1% | ≤2013 |
| Mirae Asset Global Etfs Holdings LTD. | 2.42M | 1.35% | $170.9M | added +44% | 2022 Q2 |
| AllianceBernstein | 2.42M | 1.35% | $170.7M | trimmed -15.6% | 2016 Q3 |
| Voya Investment Management LLC | 2.19M | 1.22% | $154.6M | added +59.6% | ≤2013 |
| T. Rowe Price | 2.13M | 1.19% | $150.5M | added +199.5% | ≤2013 |
| Northern Trust | 2.13M | 1.19% | $149.9M | added +8.4% | ≤2013 |
| Rovida Investment Management LTD (focused) | 1.77M | 0.99% | $125.0M | unchanged | 2024 Q4 |
| Charles Schwab Investment Management | 1.59M | 0.89% | $111.9M | added +6% | ≤2013 |
| Westfield Capital Management CO LP | 1.56M | 0.87% | $110.2M | added +25.5% | 2025 Q3 |
| Clearbridge Investments, LLC | 1.54M | 0.86% | $108.5M | added +5.6% | 2025 Q3 |
| BNY Mellon | 1.52M | 0.84% | $106.9M | added +12.2% | ≤2013 |
| FMR (Fidelity) | 1.46M | 0.81% | $103.1M | added +0.6% | 2017 Q4 |
| Goldman Sachs | 1.46M | 0.81% | $103.0M | added +4.5% | 2015 Q4 |
| UBS | 1.41M | 0.79% | $99.3M | trimmed -14.4% | ≤2013 |
| Ameriprise Financial INC | 1.24M | 0.69% | $87.5M | trimmed -40.2% | 2018 Q3 |
| Sumitomo Mitsui Trust Group, INC. | 1.14M | 0.64% | $80.7M | trimmed -10.7% | 2018 Q3 |
| Amova Asset Management Americas, INC. | 1.14M | 0.64% | $80.7M | trimmed -10.7% | 2018 Q3 |
| American Capital Management INC | 1.07M | 0.60% | $75.6M | trimmed -34.4% | 2020 Q1 |
| Principal Financial Group INC | 1.06M | 0.59% | $74.5M | added +48% | 2020 Q2 |
| Artisan Partners | 978.1k | 0.55% | $69.0M | added +38.8% | 2024 Q4 |
| Stephens Investment Management Group LLC | 888.9k | 0.50% | $62.7M | trimmed -24.6% | 2017 Q4 |
| Nuveen | 880.6k | 0.49% | $62.1M | added +0.9% | 2019 Q2 |
| Emerald Advisers, LLC | 835.9k | 0.47% | $58.9M | trimmed -4.5% | 2016 Q4 |
| Raymond James Financial INC | 833.3k | 0.47% | $58.8M | added +24.7% | 2017 Q2 |
| Mercer Global Advisors INC /ADV | 815.1k | 0.45% | $57.5M | added +147.6% | 2020 Q3 |
| Zimmer Partners, LP | 783.1k | 0.44% | $55.2M | added +770.2% | 2025 Q2 |
| T. Rowe Price Investment Management, INC. | 771.5k | 0.43% | $54.4M | added +3367.9% | 2025 Q2 |
| Federated Hermes, INC. | 729.2k | 0.41% | $51.4M | added +73.8% | 2025 Q2 |
| Bamco INC /NY/ | 715.4k | 0.40% | $50.4M | trimmed -40.9% | 2020 Q1 |
| Alyeska Investment Group | 643.2k | 0.36% | $45.3M | added +1537.2% | 2025 Q2 |
| Ghisallo Capital Management LLC | 600.0k | 0.33% | $42.3M | added +200% | 2025 Q2 |
| Squarepoint Ops LLC | 578.0k | 0.32% | $40.8M | added +3% | 2025 Q4 |
| Allspring Global Investments Holdings, LLC | 575.8k | 0.32% | $40.6M | added +19% | 2025 Q2 |
| SEI Investments CO | 570.6k | 0.32% | $40.2M | added +33.1% | 2018 Q1 |
| Susquehanna International Group | 557.8k | 0.31% | $39.3M | added +168.9% | 2016 Q4 |
| Rhumbline Advisers | 530.2k | 0.30% | $37.4M | added +10.4% | ≤2013 |
Largest 50 of 691 shown; the full ranked, searchable register is at boothcheck.com/holders/KTOS. Related filers are grouped using the filings' own included-manager declarations. Historically, several managers opening new positions in the same quarter said almost nothing about the quarter that followed (59,118 cases since 2013). A filed record, not a forecast. Nothing here is investment advice.