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Institutional Ownership · SEC Form 13F

Who owns Radware Ltd. (RDWR)


Which tracked institutional funds hold RDWR, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See RDWR company fundamentals →

Ownership as of the 2026-Q1 13F filings. 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.

123
Institutional holders
32M
Shares held (tracked funds)
73.6%
Of shares outstanding

How the tape is positioned

33 tracked funds added or opened RDWR while 20 trimmed or exited it between 2025-Q4 and 2026-Q1 — the tape is split. When large holders disagree on a name, the funds moving first are sometimes ahead of the story.

A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.

Conviction spread

RDWR’s largest tracked holder by dollar value, Senvest Management, LLC, sizes it at 3.5% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 3.5pp conviction gap — its largest holder concentrates the name more heavily than the typical one.

Book-share is each fund’s reported value in RDWR divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.

Institutional & insider positioning

Between 2025-Q4 and 2026-Q1, across 123 tracked filers holding RDWR, 51 increased or opened the position and 59 reduced or closed it; over the same quarter, there were no open-market insider Form 4s.

This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.

New buyers & exits

Funds opening or closing a position in RDWR between the 2025-Q4 and 2026-Q1 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.

New buyers 5

  • Polar Capital Holdings Plc$8M
  • SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC$5M
  • PANAGORA ASSET MANAGEMENT INC$3M
  • VANGUARD ASSET MANAGEMENT, Ltd$557K
  • Squarepoint Ops LLC$513K

Full exits 4

  • TWO SIGMA ADVISERS, LP$2M
  • Yelin Lapidot Holdings Management Ltd.$2M
  • VANGUARD GROUP INC$710K
  • Trexquant Investment LP$535K

Largest adds

  • MORGAN STANLEY$17M
  • NEUBERGER BERMAN GROUP LLC$16M
  • DEUTSCHE BANK AG\$16M
  • Senvest Management, LLC$9M
  • BlackRock, Inc.$5M
  • ACADIAN ASSET MANAGEMENT LLC$4M

Largest trims

  • FIRST TRUST ADVISORS LP$11M
  • Man Group plc$8M
  • Qube Research & Technologies Ltd$4M
  • JPMORGAN CHASE & CO$3M
  • Connor, Clark & Lunn Investment Management Ltd.$3M
  • RENAISSANCE TECHNOLOGIES LLC$3M

Institutional holders

One row per tracked fund, largest reported value first. “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding. Rows marked stale are from an earlier filing than the security’s latest quarter — that fund is absent from the newest snapshot (position exited, or reported under a different name).

FundSharesReported value% of valueQuarter
Senvest Management, LLC4,046,559$107M12.4%2026-Q1
MORGAN STANLEY added3,055,595$80M9.4%2026-Q1
Penserra Capital Management LLC trimmed2,944,371$77M9.0%2026-Q1
Artisan Partners Limited Partnership trimmed2,749,680$72M8.4%2026-Q1
Legal & General Group Plc trimmed2,295,912$60M7.1%2026-Q1
ACADIAN ASSET MANAGEMENT LLC trimmed1,711,644$45M5.3%2026-Q1
NEUBERGER BERMAN GROUP LLC added1,568,490$41M4.8%2026-Q1
BlackRock, Inc. added1,533,481$40M4.7%2026-Q1
RENAISSANCE TECHNOLOGIES LLC trimmed1,388,231$37M4.3%2026-Q1
FIRST TRUST ADVISORS LP trimmed1,020,670$27M3.1%2026-Q1
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. added906,026$24M2.8%2026-Q1
DEUTSCHE BANK AG\ added866,526$23M2.7%2026-Q1
COOPER CREEK PARTNERS MANAGEMENT LLC740,126$19M2.3%2026-Q1
RICE HALL JAMES & ASSOCIATES, LLC added683,263$18M2.1%2026-Q1
HERALD INVESTMENT MANAGEMENT Ltd trimmed650,000$17M2.0%2026-Q1
STATE STREET CORP trimmed447,023$12M1.4%2026-Q1
Connor, Clark & Lunn Investment Management Ltd. trimmed376,079$10M1.2%2026-Q1
Nuveen, LLC364,968$10M1.1%2026-Q1
Defiance ETFs, LLC trimmed353,098$9M1.1%2026-Q1
Polar Capital Holdings Plc new302,828$8M0.9%2026-Q1
OBERWEIS ASSET MANAGEMENT INC/ added286,700$8M0.9%2026-Q1
NEW YORK STATE COMMON RETIREMENT FUND286,259$8M0.9%2026-Q1
BANK OF AMERICA CORP /DE/ trimmed219,010$6M0.7%2026-Q1
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP trimmed214,242$6M0.7%2026-Q1
SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC new195,000$5M0.6%2026-Q1
TWO SIGMA INVESTMENTS, LP trimmed115,834$3M0.4%2026-Q1
GOLDMAN SACHS GROUP INC added115,050$3M0.4%2026-Q1
SEI INVESTMENTS CO trimmed114,360$3M0.4%2026-Q1
PANAGORA ASSET MANAGEMENT INC added107,951$3M0.3%2026-Q1
Qube Research & Technologies Ltd trimmed101,008$3M0.3%2026-Q1
LAZARD ASSET MANAGEMENT LLC added98,020$3M0.3%2026-Q1
Robeco Institutional Asset Management B.V. trimmed96,234$3M0.3%2026-Q1
ARK Investment Management LLC added91,580$2M0.3%2026-Q1
GEODE CAPITAL MANAGEMENT, LLC added90,743$2M0.3%2026-Q1
Banque Cantonale Vaudoise trimmed83,916$2M0.3%2026-Q1
NORTHERN TRUST CORP trimmed76,305$2M0.2%2026-Q1
Brooklyn Investment Group added72,745$2M0.2%2026-Q1
Swiss National Bank added69,600$2M0.2%2026-Q1
PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO67,744$2M0.2%2026-Q1
State of Tennessee, Department of Treasury added66,309$2M0.2%2026-Q1
XTX Topco Ltd added65,708$2M0.2%2026-Q1
Point72 Asset Management, L.P. added63,990$2M0.2%2026-Q1
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC58,472$2M0.2%2026-Q1
MILLENNIUM MANAGEMENT LLC trimmed54,787$1M0.2%2026-Q1
CITIGROUP INC trimmed53,530$1M0.2%2026-Q1
Man Group plc trimmed52,481$1M0.2%2026-Q1
PDT Partners, LLC trimmed51,974$1M0.2%2026-Q1
IQ EQ FUND MANAGEMENT (IRELAND) Ltd trimmed50,397$1M0.2%2026-Q1
ENVESTNET ASSET MANAGEMENT INC added49,473$1M0.2%2026-Q1
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM added36,404$958K0.1%2026-Q1
RENAISSANCE GROUP LLC trimmed34,164$899K0.1%2026-Q1
Robertson Stephens Wealth Management, LLC29,430$775K0.1%2026-Q1
Hennion & Walsh Asset Management, Inc. added29,131$767K0.1%2026-Q1
JPMORGAN CHASE & CO trimmed29,785$761K0.1%2026-Q1
Tidal Investments LLC added27,403$721K0.1%2026-Q1
Magnetar Financial LLC trimmed26,626$701K0.1%2026-Q1
State of New Jersey Common Pension Fund D26,619$701K0.1%2026-Q1
D. E. Shaw & Co., Inc. trimmed26,189$689K0.1%2026-Q1
CITADEL ADVISORS LLC added24,380$642K0.1%2026-Q1
VANGUARD ASSET MANAGEMENT, Ltd new21,181$557K0.1%2026-Q1
SUSQUEHANNA INTERNATIONAL GROUP, LLP trimmed20,562$541K0.1%2026-Q1
Squarepoint Ops LLC added19,481$513K0.1%2026-Q1
Handelsbanken Fonder AB added18,800$495K0.1%2026-Q1
COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS17,618$464K0.1%2026-Q1
Mirae Asset Global Investments Co., Ltd. added16,319$430K0.1%2026-Q1
R Squared Ltd trimmed14,878$392K0.0%2026-Q1
Amundi trimmed14,780$389K0.0%2026-Q1
Jump Financial, LLC trimmed14,700$387K0.0%2026-Q1
Zurcher Kantonalbank (Zurich Cantonalbank) trimmed14,249$375K0.0%2026-Q1
Engineers Gate Manager LP trimmed12,953$341K0.0%2026-Q1
UBS Group AG trimmed12,913$340K0.0%2026-Q1
TEACHER RETIREMENT SYSTEM OF TEXAS trimmed12,557$331K0.0%2026-Q1
Police & Firemen's Retirement System of New Jersey12,087$318K0.0%2026-Q1
Quadrature Capital Ltd trimmed11,686$308K0.0%2026-Q1
PEAK6 LLC new10,461$275K0.0%2026-Q1
MARSHALL WACE, LLP added128,197$3M0.4%2025-Q3 stale
Phoenix Financial Ltd. trimmed109,846$3M0.4%2025-Q2 stale
SG Americas Securities, LLC trimmed93,101$3M0.3%2025-Q2 stale
TWO SIGMA ADVISERS, LP added95,813$2M0.3%2025-Q4 stale
Yelin Lapidot Holdings Management Ltd. trimmed72,277$2M0.2%2025-Q4 stale
Cubist Systematic Strategies, LLC added60,267$2M0.2%2025-Q3 stale
ExodusPoint Capital Management, LP added45,407$1M0.1%2025-Q3 stale
GSA CAPITAL PARTNERS LLP trimmed31,129$825K0.1%2025-Q3 stale
HighTower Advisors, LLC30,474$807K0.1%2025-Q3 stale
Inspire Investing, LLC new34,128$738K0.1%2025-Q1 stale
VANGUARD GROUP INC29,463$710K0.1%2025-Q4 stale
Ellsworth Advisors, LLC added30,258$654K0.1%2025-Q1 stale
Semanteon Capital Management, LP trimmed21,227$562K0.1%2025-Q3 stale
Trexquant Investment LP trimmed22,199$535K0.1%2025-Q4 stale
ALLIANCEBERNSTEIN L.P.16,185$476K0.1%2025-Q2 stale
BALYASNY ASSET MANAGEMENT L.P. added19,726$426K0.0%2025-Q1 stale
Cresset Asset Management, LLC trimmed19,102$413K0.0%2025-Q1 stale
Vident Advisory, LLC trimmed15,528$411K0.0%2025-Q3 stale
Invesco Ltd. trimmed14,656$388K0.0%2025-Q3 stale
AMERIPRISE FINANCIAL INC trimmed14,112$374K0.0%2025-Q3 stale
FourThought Financial Partners, LLC new12,037$319K0.0%2025-Q3 stale
Quantbot Technologies LP added11,096$294K0.0%2025-Q3 stale
Federation des caisses Desjardins du Quebec13,531$293K0.0%2025-Q1 stale
Aquatic Capital Management LLC added10,942$290K0.0%2025-Q3 stale
Walleye Capital LLC trimmed11,440$276K0.0%2025-Q4 stale

Ownership over time

Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.

HoldersTotal shares

Reading this table

Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.

About 13F filings

A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.

Learn how to read institutional ownership