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.
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).
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| Senvest Management, LLC | 4,046,559 | $107M | 12.4% | 2026-Q1 |
| MORGAN STANLEY added | 3,055,595 | $80M | 9.4% | 2026-Q1 |
| Penserra Capital Management LLC trimmed | 2,944,371 | $77M | 9.0% | 2026-Q1 |
| Artisan Partners Limited Partnership trimmed | 2,749,680 | $72M | 8.4% | 2026-Q1 |
| Legal & General Group Plc trimmed | 2,295,912 | $60M | 7.1% | 2026-Q1 |
| ACADIAN ASSET MANAGEMENT LLC trimmed | 1,711,644 | $45M | 5.3% | 2026-Q1 |
| NEUBERGER BERMAN GROUP LLC added | 1,568,490 | $41M | 4.8% | 2026-Q1 |
| BlackRock, Inc. added | 1,533,481 | $40M | 4.7% | 2026-Q1 |
| RENAISSANCE TECHNOLOGIES LLC trimmed | 1,388,231 | $37M | 4.3% | 2026-Q1 |
| FIRST TRUST ADVISORS LP trimmed | 1,020,670 | $27M | 3.1% | 2026-Q1 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. added | 906,026 | $24M | 2.8% | 2026-Q1 |
| DEUTSCHE BANK AG\ added | 866,526 | $23M | 2.7% | 2026-Q1 |
| COOPER CREEK PARTNERS MANAGEMENT LLC | 740,126 | $19M | 2.3% | 2026-Q1 |
| RICE HALL JAMES & ASSOCIATES, LLC added | 683,263 | $18M | 2.1% | 2026-Q1 |
| HERALD INVESTMENT MANAGEMENT Ltd trimmed | 650,000 | $17M | 2.0% | 2026-Q1 |
| STATE STREET CORP trimmed | 447,023 | $12M | 1.4% | 2026-Q1 |
| Connor, Clark & Lunn Investment Management Ltd. trimmed | 376,079 | $10M | 1.2% | 2026-Q1 |
| Nuveen, LLC | 364,968 | $10M | 1.1% | 2026-Q1 |
| Defiance ETFs, LLC trimmed | 353,098 | $9M | 1.1% | 2026-Q1 |
| Polar Capital Holdings Plc new | 302,828 | $8M | 0.9% | 2026-Q1 |
| OBERWEIS ASSET MANAGEMENT INC/ added | 286,700 | $8M | 0.9% | 2026-Q1 |
| NEW YORK STATE COMMON RETIREMENT FUND | 286,259 | $8M | 0.9% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ trimmed | 219,010 | $6M | 0.7% | 2026-Q1 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP trimmed | 214,242 | $6M | 0.7% | 2026-Q1 |
| SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC new | 195,000 | $5M | 0.6% | 2026-Q1 |
| TWO SIGMA INVESTMENTS, LP trimmed | 115,834 | $3M | 0.4% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC added | 115,050 | $3M | 0.4% | 2026-Q1 |
| SEI INVESTMENTS CO trimmed | 114,360 | $3M | 0.4% | 2026-Q1 |
| PANAGORA ASSET MANAGEMENT INC added | 107,951 | $3M | 0.3% | 2026-Q1 |
| Qube Research & Technologies Ltd trimmed | 101,008 | $3M | 0.3% | 2026-Q1 |
| LAZARD ASSET MANAGEMENT LLC added | 98,020 | $3M | 0.3% | 2026-Q1 |
| Robeco Institutional Asset Management B.V. trimmed | 96,234 | $3M | 0.3% | 2026-Q1 |
| ARK Investment Management LLC added | 91,580 | $2M | 0.3% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC added | 90,743 | $2M | 0.3% | 2026-Q1 |
| Banque Cantonale Vaudoise trimmed | 83,916 | $2M | 0.3% | 2026-Q1 |
| NORTHERN TRUST CORP trimmed | 76,305 | $2M | 0.2% | 2026-Q1 |
| Brooklyn Investment Group added | 72,745 | $2M | 0.2% | 2026-Q1 |
| Swiss National Bank added | 69,600 | $2M | 0.2% | 2026-Q1 |
| PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO | 67,744 | $2M | 0.2% | 2026-Q1 |
| State of Tennessee, Department of Treasury added | 66,309 | $2M | 0.2% | 2026-Q1 |
| XTX Topco Ltd added | 65,708 | $2M | 0.2% | 2026-Q1 |
| Point72 Asset Management, L.P. added | 63,990 | $2M | 0.2% | 2026-Q1 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 58,472 | $2M | 0.2% | 2026-Q1 |
| MILLENNIUM MANAGEMENT LLC trimmed | 54,787 | $1M | 0.2% | 2026-Q1 |
| CITIGROUP INC trimmed | 53,530 | $1M | 0.2% | 2026-Q1 |
| Man Group plc trimmed | 52,481 | $1M | 0.2% | 2026-Q1 |
| PDT Partners, LLC trimmed | 51,974 | $1M | 0.2% | 2026-Q1 |
| IQ EQ FUND MANAGEMENT (IRELAND) Ltd trimmed | 50,397 | $1M | 0.2% | 2026-Q1 |
| ENVESTNET ASSET MANAGEMENT INC added | 49,473 | $1M | 0.2% | 2026-Q1 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM added | 36,404 | $958K | 0.1% | 2026-Q1 |
| RENAISSANCE GROUP LLC trimmed | 34,164 | $899K | 0.1% | 2026-Q1 |
| Robertson Stephens Wealth Management, LLC | 29,430 | $775K | 0.1% | 2026-Q1 |
| Hennion & Walsh Asset Management, Inc. added | 29,131 | $767K | 0.1% | 2026-Q1 |
| JPMORGAN CHASE & CO trimmed | 29,785 | $761K | 0.1% | 2026-Q1 |
| Tidal Investments LLC added | 27,403 | $721K | 0.1% | 2026-Q1 |
| Magnetar Financial LLC trimmed | 26,626 | $701K | 0.1% | 2026-Q1 |
| State of New Jersey Common Pension Fund D | 26,619 | $701K | 0.1% | 2026-Q1 |
| D. E. Shaw & Co., Inc. trimmed | 26,189 | $689K | 0.1% | 2026-Q1 |
| CITADEL ADVISORS LLC added | 24,380 | $642K | 0.1% | 2026-Q1 |
| VANGUARD ASSET MANAGEMENT, Ltd new | 21,181 | $557K | 0.1% | 2026-Q1 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP trimmed | 20,562 | $541K | 0.1% | 2026-Q1 |
| Squarepoint Ops LLC added | 19,481 | $513K | 0.1% | 2026-Q1 |
| Handelsbanken Fonder AB added | 18,800 | $495K | 0.1% | 2026-Q1 |
| COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS | 17,618 | $464K | 0.1% | 2026-Q1 |
| Mirae Asset Global Investments Co., Ltd. added | 16,319 | $430K | 0.1% | 2026-Q1 |
| R Squared Ltd trimmed | 14,878 | $392K | 0.0% | 2026-Q1 |
| Amundi trimmed | 14,780 | $389K | 0.0% | 2026-Q1 |
| Jump Financial, LLC trimmed | 14,700 | $387K | 0.0% | 2026-Q1 |
| Zurcher Kantonalbank (Zurich Cantonalbank) trimmed | 14,249 | $375K | 0.0% | 2026-Q1 |
| Engineers Gate Manager LP trimmed | 12,953 | $341K | 0.0% | 2026-Q1 |
| UBS Group AG trimmed | 12,913 | $340K | 0.0% | 2026-Q1 |
| TEACHER RETIREMENT SYSTEM OF TEXAS trimmed | 12,557 | $331K | 0.0% | 2026-Q1 |
| Police & Firemen's Retirement System of New Jersey | 12,087 | $318K | 0.0% | 2026-Q1 |
| Quadrature Capital Ltd trimmed | 11,686 | $308K | 0.0% | 2026-Q1 |
| PEAK6 LLC new | 10,461 | $275K | 0.0% | 2026-Q1 |
| MARSHALL WACE, LLP added | 128,197 | $3M | 0.4% | 2025-Q3 stale |
| Phoenix Financial Ltd. trimmed | 109,846 | $3M | 0.4% | 2025-Q2 stale |
| SG Americas Securities, LLC trimmed | 93,101 | $3M | 0.3% | 2025-Q2 stale |
| TWO SIGMA ADVISERS, LP added | 95,813 | $2M | 0.3% | 2025-Q4 stale |
| Yelin Lapidot Holdings Management Ltd. trimmed | 72,277 | $2M | 0.2% | 2025-Q4 stale |
| Cubist Systematic Strategies, LLC added | 60,267 | $2M | 0.2% | 2025-Q3 stale |
| ExodusPoint Capital Management, LP added | 45,407 | $1M | 0.1% | 2025-Q3 stale |
| GSA CAPITAL PARTNERS LLP trimmed | 31,129 | $825K | 0.1% | 2025-Q3 stale |
| HighTower Advisors, LLC | 30,474 | $807K | 0.1% | 2025-Q3 stale |
| Inspire Investing, LLC new | 34,128 | $738K | 0.1% | 2025-Q1 stale |
| VANGUARD GROUP INC | 29,463 | $710K | 0.1% | 2025-Q4 stale |
| Ellsworth Advisors, LLC added | 30,258 | $654K | 0.1% | 2025-Q1 stale |
| Semanteon Capital Management, LP trimmed | 21,227 | $562K | 0.1% | 2025-Q3 stale |
| Trexquant Investment LP trimmed | 22,199 | $535K | 0.1% | 2025-Q4 stale |
| ALLIANCEBERNSTEIN L.P. | 16,185 | $476K | 0.1% | 2025-Q2 stale |
| BALYASNY ASSET MANAGEMENT L.P. added | 19,726 | $426K | 0.0% | 2025-Q1 stale |
| Cresset Asset Management, LLC trimmed | 19,102 | $413K | 0.0% | 2025-Q1 stale |
| Vident Advisory, LLC trimmed | 15,528 | $411K | 0.0% | 2025-Q3 stale |
| Invesco Ltd. trimmed | 14,656 | $388K | 0.0% | 2025-Q3 stale |
| AMERIPRISE FINANCIAL INC trimmed | 14,112 | $374K | 0.0% | 2025-Q3 stale |
| FourThought Financial Partners, LLC new | 12,037 | $319K | 0.0% | 2025-Q3 stale |
| Quantbot Technologies LP added | 11,096 | $294K | 0.0% | 2025-Q3 stale |
| Federation des caisses Desjardins du Quebec | 13,531 | $293K | 0.0% | 2025-Q1 stale |
| Aquatic Capital Management LLC added | 10,942 | $290K | 0.0% | 2025-Q3 stale |
| Walleye Capital LLC trimmed | 11,440 | $276K | 0.0% | 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.
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.