Mercury Systems Inc

Historical 13F Holders

Symbol
MRCY
CUSIP
589378108
All holders as of
Q2 2026
Type
Equity
Class
COM
Reported Value, Excluding Options
Total Filings

13D/G Filers

Investors who own more than 5% of a class must file a Schedule 13D or 13G. Each filer's latest filing for 589378108 since 12/18/2024, largest first.

Filer % of Class Filed
BlackRock, Inc. 13G/A 14.4% 7/29/2026
Event 6/30/2026
JANA Partners Management, LP 13D/A 6.9% 3/4/2026
Event 3/3/2026
State Street Corp 13G 6.4% 5/12/2026
Event 3/31/2026
Vanguard Portfolio Management LLC 13G 5.1% 7/31/2026
Event 6/30/2026
Under 5%, checked the "5 percent or less" box, or amended by a later filing (2)
William Blair Investment Management, LLC 13G/A 4.2% 11/12/2025
Event 9/30/2025
Vanguard Group Inc 13G/A 0% 3/27/2026
Event 3/13/2026

13F Holders by Quarter

Period Filings Shares, Excl. Options Value, Excl. Options
2026 Q3 21 139 k $11.2 M
2026 Q2 413 73.3 M $8.08 B
2026 Q1 371 65.2 M $4.75 B
2025 Q4 363 64.9 M $4.74 B
2025 Q3 339 65.0 M $5.04 B
2025 Q2 299 65.9 M $3.55 B
2025 Q1 265 63.2 M $2.72 B
2024 Q4 254 63.4 M $2.66 B
2024 Q3 255 63.1 M $2.33 B
2024 Q2 247 65.6 M $1.77 B
2024 Q1 236 63.4 M $1.87 B
2023 Q4 234 61.4 M $2.25 B
2023 Q3 232 59.8 M $2.22 B
2023 Q2 252 56.2 M $1.95 B
2023 Q1 262 57.7 M $2.95 B
2022 Q4 245 60.8 M $2.72 B
2022 Q3 244 57.4 M $2.33 B
2022 Q2 264 56.8 M $3.65 B
2022 Q1 271 59.0 M $3.80 B
2021 Q4 272 57.2 M $3.15 B
2021 Q3 264 53.0 M $2.51 B
2021 Q2 267 52.6 M $3.48 B
2021 Q1 300 53.1 M $3.75 B
2020 Q4 298 55.2 M $4.86 B
2020 Q3 296 54.0 M $4.18 B
2020 Q2 312 54.0 M $4.25 B
2020 Q1 278 58.8 M $4.20 B
2019 Q4 286 54.2 M $3.75 B
2019 Q3 304 54.0 M $4.38 B
2019 Q2 299 53.6 M $3.77 B
2019 Q1 263 47.5 M $3.05 B
2018 Q4 214 49.1 M $2.33 B
2018 Q3 234 50.8 M $2.81 B
2018 Q2 218 52.2 M $1.99 B
2018 Q1 238 47.6 M $2.30 B
2017 Q4 230 45.2 M $2.32 B
2017 Q3 220 46.6 M $2.42 B
2017 Q2 211 46.4 M $1.95 B
2017 Q1 204 47.7 M $1.86 B
2016 Q4 189 38.9 M $1.18 B
2016 Q3 164 37.7 M $928 M
2016 Q2 175 37.1 M $923 M
2016 Q1 167 31.3 M $635 M
2015 Q4 153 31.2 M $573 M
2015 Q3 147 31.0 M $493 M
2015 Q2 133 30.5 M $446 M
2015 Q1 133 29.9 M $465 M
2014 Q4 125 29.8 M $414 M
2014 Q3 129 30.0 M $330 M
2014 Q2 128 29.1 M $330 M
2014 Q1 113 29.2 M $386 M