Rapid7, Inc.
US ˙ NasdaqGM ˙ US7534221046

SecurityRPD / Rapid7, Inc.
InstitutionEngineers Gate Manager LP
Latest Disclosed Ownership359,071 shares
Latest Disclosed Value $ 1,978,481
Engineers Gate Manager LP reports 2,636.82% increase in ownership of RPD / Rapid7, Inc.

On May 15, 2026 - Engineers Gate Manager LP filed a 13F-HR form disclosing ownership of 359,071 shares of Rapid7, Inc. (US:RPD) valued at $1,978,481 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 13,120 shares of Rapid7, Inc.. This represents a change in shares of 2,636.82% during the quarter. The current value of the position is $2,752,279 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 RAPID7 COM 753422104 359,071 345,951 2,636.82 1,978 893.97 0.0247
2026-02-17 2025-12-31 13F RAPID7 COM 753422104 13,120 -85,890 -86.75 199 -89.28 0.0024
2025-11-14 2025-09-30 13F RAPID7 COM 753422104 99,010 73,447 287.32 1,856 214.04 0.0213
2025-08-14 2025-06-30 13F RAPID7 COM 753422104 25,563 -48,543 -65.50 591 -69.91 0.0074
2025-05-15 2025-03-31 13F RAPID7 COM 753422104 74,106 74,106 1,965 0.0331
2025-02-14 2024-12-31 13F RAPID7 COM 753422104 0 -55,822 -100.00 0 -100.00
2024-11-14 2024-09-30 13F RAPID7 COM 753422104 55,822 41,806 298.27 2,227 267.93 0.0435
2024-08-14 2024-06-30 13F RAPID7 COM 753422104 14,016 -68,979 -83.11 606 -85.14 0.0137
2024-05-15 2024-03-31 13F RAPID7 COM 753422104 82,995 32,064 62.96 4,070 39.96 0.1071
2024-02-14 2023-12-31 13F RAPID7 COM 753422104 50,931 32,243 172.53 2,908 240.12 0.0830
2023-11-14 2023-09-30 13F RAPID7 COM 753422104 18,688 10,624 131.75 856 134.25 0.0316
2023-08-14 2023-06-30 13F RAPID7 COM 753422104 8,064 -4,694 -36.79 365 -37.61 0.0138
2023-05-15 2023-03-31 13F RAPID7 COM 753422104 12,758 -5,973 -31.89 586 -8.02 0.0245
2023-02-14 2022-12-31 13F RAPID7 COM 753422104 18,731 -44,098 -70.19 636 -76.40 0.0382
2022-11-14 2022-09-30 13F RAPID7 COM 753422104 62,829 34,272 120.01 2,695 41.25 0.1677
2022-08-15 2022-06-30 13F RAPID7 COM 753422104 28,557 28,557 1,908 0.0699
2022-05-16 2022-03-31 13F RAPID7 COM 753422104 0 -25,488 -100.00 0 -100.00
2022-02-14 2021-12-31 13F RAPID7 COM 753422104 25,488 1,351 5.60 3,000 9.97 0.1349
2021-11-15 2021-09-30 13F RAPID7 COM 753422104 24,137 19,031 372.72 2,728 464.80 0.1555
2021-08-16 2021-06-30 13F RAPID7 COM 753422104 5,106 -2,090 -29.04 483 -10.06 0.0311
2021-05-17 2021-03-31 13F RAPID7 COM 753422104 7,196 -12,536 -63.53 537 -69.81 0.0266
2021-02-16 2020-12-31 13F RAPID7 COM 753422104 19,732 -3,015 -13.25 1,779 27.71 0.0771
2020-11-16 2020-09-30 13F RAPID7 COM 753422104 22,747 -40,166 -63.84 1,393 -56.60 0.0654
2020-08-17 2020-06-30 13F RAPID7 COM 753422104 62,913 55,857 791.62 3,210 949.02 0.1633
2020-05-15 2020-03-31 13F RAPID7 COM 753422104 7,056 7,056 306 0.0220
2020-02-14 2019-12-31 13F RAPID7 COM 753422104 0 -20,454 -100.00 0 -100.00
2019-11-14 2019-09-30 13F RAPID7 COM 753422104 20,454 20,454 928 0.0471
2019-08-14 2019-06-30 13F RAPID7 COM 753422104 0 -76,573 -100.00 0 -100.00
2019-05-15 2019-03-31 13F RAPID7 COM 753422104 76,573 32,359 73.19 3,875 181.20 0.2347
2019-02-14 2018-12-31 13F RAPID7 COM 753422104 44,214 -44,442 -50.13 1,378 -57.90 0.1103
2018-11-01 2018-09-30 13F RAPID7 COM 753422104 88,656 33,554 60.89 3,273 110.48 0.2515
2018-08-03 2018-06-30 13F RAPID7 COM 753422104 55,102 4,371 8.62 1,555 19.89 0.1212
2018-05-07 2018-03-31 13F RAPID7 COM 753422104 50,731 50,731 1,297 0.0864
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.