Rapid7, Inc.
US ˙ NasdaqGM ˙ US7534221046

SecurityRPD / Rapid7, Inc.
InstitutionDimensional Fund Advisors Lp
Latest Disclosed Ownership228,498 shares
Latest Disclosed Value $ 1,258,923
Dimensional Fund Advisors Lp reports 19.66% decrease in ownership of RPD / Rapid7, Inc.

On May 7, 2026 - Dimensional Fund Advisors Lp filed a 13F-HR form disclosing ownership of 228,498 shares of Rapid7, Inc. (US:RPD) valued at $1,259,024 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 284,402 shares of Rapid7, Inc.. This represents a change in shares of -19.66% during the quarter. The current value of the position is $1,716,020 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)
2026-05-07 2026-03-31 13F RAPID7 COM 753422104 228,498 -55,904 -19.66 1,259 -70.90 0.0001
2026-02-12 2025-12-31 13F RAPID7 COM 753422104 284,402 -255,068 -47.28 4,324 -57.27 0.0009
2025-11-12 2025-09-30 13F RAPID7 COM 753422104 539,470 10,099 1.91 10,116 -17.37 0.0022
2025-08-12 2025-06-30 13F RAPID7 COM 753422104 529,371 119,752 29.23 12,244 12.75 0.0028
2025-05-13 2025-03-31 13F RAPID7 COM 753422104 409,619 307,722 301.99 10,859 164.92 0.0027
2025-02-13 2024-12-31 13F RAPID7 COM 753422104 101,897 101,897 4,099 0.0010
2023-05-12 2023-03-31 13F RAPID7 COM 753422104 0 -13,967 -100.00 0 0.0000
2023-02-09 2022-12-31 13F RAPID7 COM 753422104 13,967 -281 -1.97 0 -100.00 0.0001
2022-11-10 2022-09-30 13F RAPID7 COM 753422104 14,248 -7,143 -33.39 611 -57.24 0.0002
2022-08-12 2022-06-30 13F RAPID7 COM 753422104 21,391 1,133 5.59 1,429 -36.57 0.0005
2022-05-13 2022-03-31 13F RAPID7 COM 753422104 20,258 -7,272 -26.41 2,253 -30.46 0.0007
2022-02-09 2021-12-31 13F RAPID7 COM 753422104 27,530 14,331 108.58 3,240 117.16 0.0010
2021-11-12 2021-09-30 13F RAPID7 COM 753422104 13,199 13,199 1,492 0.0005
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.