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RPD in the 13F filings

Rapid7 Inc · CUSIP 753422104

Sector · Software and IT servicesTheme · Cloud and enterprise software· L3VLUP-definedTheme · Prepackaged software
Quarter
Q3 2026 · early filersQ2 2026Q1 2026Q4 2025Q3 2025Q2 2025Q1 2025Q4 2024Q3 2024Q2 2024Q1 2024Q4 2023
Quarter end
31 Mar 2026
the date the book describes
Filed
18 May 2026
latest of these filings; the earliest 12 May 2026
Managers listing it
29
at least, of 95 tracked, among listed positions
Comparable managers
91
filed both Q4 2025 and Q1 2026; 2 listed it in both
Shares listed
18,316,323
combined, among listed positions
Reported value
$102m
combined, at the quarter end

AllianceBernstein LP. Values in this filing are at the previous quarter end's prices; its share count is the quarter end's.

Among the 91 comparable managers: 21 buyers (opened or added shares) and 10 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +4,199,082.

Managers listing RPD in Q1 2026

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q4 2025, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

29 of 29 holders

ActionFiling
Jana Partners6,743,653$37m2.23%Held015 May 2026 (the filing on sec.gov)
Two Sigma Investments LP2,233,928$12munder 0.1%Added+1,472,60015 May 2026 (the filing on sec.gov)
Acadian Asset Management LLC1,766,468$9.7munder 0.1%Added+1,308,22313 May 2026 (the filing on sec.gov)
Millennium Management LLC938,460$5.2munder 0.1%Trimmed-42,73015 May 2026 (the filing on sec.gov)
Marshall Wace LLP923,594$5.1munder 0.1%Trimmed-481,09215 May 2026 (the filing on sec.gov)
Point72 Asset Management LP905,181$5.0munder 0.1%Added+461,52615 May 2026 (the filing on sec.gov)
Jane Street Group LLC890,924$4.9munder 0.1%Added+773,77912 May 2026 (the filing on sec.gov)
AQR Capital Management LLC731,278$4.0munder 0.1%Added+420,73515 May 2026 (the filing on sec.gov)
Citadel Advisors LLC591,403$3.3munder 0.1%Added+275,23415 May 2026 (the filing on sec.gov)
Susquehanna International Group LLP310,448$1.7munder 0.1%Added+114,08215 May 2026 (the filing on sec.gov)
Man Group PLC300,692$1.7munder 0.1%Added+169,64115 May 2026 (the filing on sec.gov)
Walleye Capital LLC251,639$1.4munder 0.1%Added+82313 May 2026 (the filing on sec.gov)
Squarepoint Ops LLC239,541$1.3munder 0.1%Added+197,78915 May 2026 (the filing on sec.gov)
D. E. Shaw & Co.216,467$1.2munder 0.1%Trimmed-213,20515 May 2026 (the filing on sec.gov)
Fidelity (FMR LLC)191,200$1.1munder 0.1%Added+56,30815 May 2026 (the filing on sec.gov)
Invesco Ltd188,321$1.0munder 0.1%Added+72,22412 May 2026 (the filing on sec.gov)
AllianceBernstein LP67,097$1.0munder 0.1%Trimmed-79,53815 May 2026 (the filing on sec.gov)
Renaissance Technologies LLC149,196$822kunder 0.1%Added+125,70014 May 2026 (the filing on sec.gov)
Soros Fund Management LLC125,000$689kunder 0.1%Trimmed-9,84515 May 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc89,670$495kunder 0.1%Added+18,81215 May 2026 (the filing on sec.gov)
Schonfeld Strategic Advisors LLC87,693$483kunder 0.1%Newnew15 May 2026 (the filing on sec.gov)
Verition Fund Management LLC62,075$342kunder 0.1%Trimmed-51,11015 May 2026 (the filing on sec.gov)
ExodusPoint Capital Management LP61,640$340kunder 0.1%Newnew14 May 2026 (the filing on sec.gov)
Janus Henderson Group Ltd61,368$338kunder 0.1%Trimmed-92,61118 May 2026 (the filing on sec.gov)
Freestone Grove Partners LP58,421$322kunder 0.1%Newnew15 May 2026 (the filing on sec.gov)
Page 1 of 2

Largest increases and reductions, by shares

Q4 2025 to Q1 2026, among managers that listed it in both quarters or opened it.

Increases

Reductions

New positions and exits

At least these many: a manager is shown exiting only where its own filing shows the position gone.

New (6)

Exited (3)

Ownership over time

Every quarter on file. A quarter-end value moves with the price as well as with the shares held; buyers and sellers count comparable managers, by shares.
6 in Q3 2024 to 2 in Q2 2026

Tracked managers listing it, at least.

0358102017201820192020202120222023202420252026
the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.
RPD by quarter
QuarterHoldersReported valueBuyersSellers
Q3 20152$26mn.a.n.a.
Q4 20151$1.1mn.a.n.a.
Q3 20161$1.5mn.a.n.a.
Q4 20162$6.1mn.a.n.a.
Q1 20171$898kn.a.n.a.
Q2 20172$5.4mn.a.n.a.
Q3 20171$29mn.a.n.a.
Q4 20171$31mn.a.n.a.
Q1 20182$38mn.a.n.a.
Q2 20181$36mn.a.n.a.
Q3 20183$83mn.a.n.a.
Q4 20184$126mn.a.n.a.
Q1 20196$161mn.a.n.a.
Q2 20196$165mn.a.n.a.
Q3 20195$112mn.a.n.a.
Q4 20198$166mn.a.n.a.
Q1 20205$222mn.a.n.a.
Q2 20208$362mn.a.n.a.
Q3 20206$402mn.a.n.a.
Q4 20209$724mn.a.n.a.
Q1 20217$588mn.a.n.a.
Q2 20217$893mn.a.n.a.
Q3 20219$955mn.a.n.a.
Q4 202110$977mn.a.n.a.
Q1 20228$878mn.a.n.a.
Q2 20226$428mn.a.n.a.
Q3 20225$210mn.a.n.a.
Q4 20225$61mn.a.n.a.
Q1 20235$186mn.a.n.a.
Q2 20237$185mn.a.n.a.
Q3 20239$248mn.a.n.a.
Q4 20237$201m35
Q1 20243$121m22
Q2 20245$299m50
Q3 20246$292m51
Q4 20247$232m52
Q1 20257$207m70
Q2 20253$139m11
Q3 20252$124m12
Q4 20252$105m209
Q1 20262$38m2110
Q2 20262$74m1813

Compare with…

Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.

RPD and GOOGL →RPD and AMZN →RPD and MSFT →Choose a stock to compare with RPD →

How much of the picture this is

A 13F is a manager’s long US-listed equity book at a quarter end, filed up to 45 days later. It shows no shorts, cash, bonds or performance, and it is never today’s portfolio. Large books are listed to their largest positions, so a manager missing from this table may still hold a small position below that line. These are 95 tracked managers, not the institutional market.

Which funds own RPD, latest filings →Back to the 13F Explorer →