Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
315 institutional managers reported holding KGS for the quarter ended Mar 31, 2026. Reported positions total over 95% of shares outstanding; the top 10 hold 54%. 88 opened new positions; 49 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| BlackRock | 12.31M | 14.07% | $717.9M | added +1.4% | 2023 Q3 |
| Invesco | 8.18M | 9.35% | $477.3M | added +7.8% | 2023 Q2 |
| Vanguard Group | 6.35M | 7.26% | $370.4M | added +2.9% | 2023 Q2 |
| FMR (Fidelity) | 4.56M | 5.22% | $266.2M | trimmed -52.6% | 2023 Q3 |
| State Street | 3.43M | 3.92% | $200.2M | added +2.8% | 2023 Q3 |
| Dimensional Fund Advisors | 3.11M | 3.55% | $181.1M | added +4.6% | 2024 Q3 |
| American Century Companies INC | 2.45M | 2.80% | $142.7M | added +19% | 2023 Q4 |
| Zimmer Partners, LP | 2.38M | 2.72% | $138.9M | trimmed -44.2% | 2023 Q2 |
| Goldman Sachs | 2.11M | 2.42% | $123.3M | trimmed -1.2% | 2023 Q2 |
| T. Rowe Price | 2.05M | 2.34% | $119.6M | trimmed -11.8% | 2024 Q3 |
| Geode Capital | 1.99M | 2.28% | $116.2M | added +3.2% | 2023 Q3 |
| Citadel Advisors | 1.90M | 2.18% | $111.1M | added +34.6% | 2023 Q2 |
| Two Sigma | 1.80M | 2.05% | $104.8M | added +98.9% | 2023 Q2 |
| BNP Paribas Financial Markets | 1.54M | 1.76% | $89.8M | added +37% | 2024 Q4 |
| Bank OF America CORP /DE/ | 1.54M | 1.76% | $89.7M | added +16.6% | 2023 Q3 |
| Nomura Asset Management International INC. | 1.49M | 1.71% | $87.1M | added +9.1% | 2025 Q4 |
| Wellington Management | 1.31M | 1.50% | $76.7M | added +3912.8% | 2024 Q1 |
| 140 Summer Partners LP (focused) | 1.30M | 1.48% | $75.6M | opened | 2026 Q1 |
| UBS | 1.07M | 1.22% | $62.2M | trimmed -12.9% | 2023 Q4 |
| Mirae Asset Global Etfs Holdings LTD. | 951.3k | 1.09% | $55.5M | added +18.9% | 2024 Q2 |
| Charles Schwab Investment Management | 943.4k | 1.08% | $55.0M | added +4.7% | 2023 Q3 |
| Eagle Global Advisors LLC | 930.8k | 1.06% | $54.3M | trimmed -12.4% | 2025 Q4 |
| Morgan Stanley | 930.1k | 1.06% | $54.2M | added +33.4% | 2023 Q3 |
| Deprince Race & Zollo INC | 901.4k | 1.03% | $52.6M | trimmed -11.9% | 2025 Q3 |
| Ameriprise Financial INC | 877.5k | 1.00% | $51.2M | added +527.1% | 2024 Q1 |
| Renaissance Technologies | 838.6k | 0.96% | $48.9M | added +45.9% | 2023 Q3 |
| BNY Mellon | 803.4k | 0.92% | $46.9M | unchanged | 2023 Q3 |
| Northern Trust | 783.9k | 0.90% | $45.7M | added +3% | 2023 Q3 |
| Tortoise Capital Advisors, L.l.c. | 726.2k | 0.83% | $42.4M | added +0.8% | 2023 Q2 |
| SG Americas Securities, LLC | 635.7k | 0.73% | $37.1M | added +2692.2% | 2024 Q3 |
| Kayne Anderson Capital Advisors LP (focused) | 623.0k | 0.71% | $36.3M | added +1418.1% | 2023 Q4 |
| Augustine Asset Management INC | 609.4k | 0.70% | $35.5M | unchanged | 2024 Q2 |
| Barclays PLC | 596.5k | 0.68% | $34.8M | added +327.1% | 2023 Q3 |
| Cibc Bancorp USA INC. | 578.9k | 0.66% | $33.8M | trimmed -60.8% | 2023 Q2 |
| Principal Financial Group INC | 548.0k | 0.63% | $32.0M | added +4.6% | 2024 Q3 |
| Public Sector Pension Investment Board | 528.4k | 0.60% | $30.8M | added +83.7% | 2025 Q3 |
| Ghisallo Capital Management LLC | 500.0k | 0.57% | $29.2M | trimmed -58.3% | 2023 Q2 |
| Nuveen | 470.9k | 0.54% | $27.5M | added +198.9% | 2023 Q3 |
| Ripple Effect Asset Management LP (focused) | 458.0k | 0.52% | $26.7M | trimmed -58.2% | 2025 Q2 |
| Loomis Sayles & CO L P | 443.3k | 0.51% | $25.9M | trimmed -3.4% | 2025 Q2 |
| Citigroup INC | 413.0k | 0.47% | $24.1M | added +97.8% | 2023 Q4 |
| Federated Hermes, INC. | 406.2k | 0.46% | $23.7M | added +20310750% | 2024 Q1 |
| Walleye Capital LLC | 400.3k | 0.46% | $23.3M | opened | 2026 Q1 |
| Franklin Resources | 395.3k | 0.45% | $23.1M | added +1229.6% | 2024 Q3 |
| Steadfast Capital Management LP | 385.7k | 0.44% | $22.5M | opened | 2026 Q1 |
| Westend Capital Management, LLC | 369.5k | 0.42% | $21.6M | added +1.7% | 2025 Q4 |
| Duff & Phelps Investment Management CO | 349.1k | 0.40% | $20.4M | trimmed -24.5% | 2023 Q3 |
| Royce & Associates | 337.0k | 0.39% | $19.7M | added +9% | 2024 Q3 |
| Holocene Advisors | 321.6k | 0.37% | $18.8M | opened | 2026 Q1 |
| Hawk Ridge Capital Management LP (focused) | 303.8k | 0.35% | $17.7M | opened | 2026 Q1 |
Largest 50 of 315 shown; the full ranked, searchable register is at boothcheck.com/holders/KGS. 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.