IDEX CORP IEX
COM · Common Stock · CUSIP 45167R104 · ISIN US45167R1041
Publicly listed company that makes fluidics systems and specialty engineered products
- SectorIndustrials
- IndustryPumps & Pumping Equipment
- HeadquartersNorthbrook, IL
- Founded1988
- Websiteidexcorp.com
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($24.0m this quarter). Holder counts are more reliable. Shares outstanding: 74.3m as of 2026-02-13, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $178.02. Options: 6 managers hold calls ($20.5m notional), 3 hold puts ($1.9m).
Trends to Q4 2025
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 558 |
| Q4 2022 | 616 |
| Q1 2023 | 617 |
| Q2 2023 | 641 |
| Q3 2023 | 622 |
| Q4 2023 | 622 |
| Q1 2024 | 626 |
| Q2 2024 | 633 |
| Q3 2024 | 617 |
| Q4 2024 | 632 |
| Q1 2025 | 642 |
| Q2 2025 | 641 |
| Q3 2025 | 635 |
| Q4 2025 | 631 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q1 2024 | 268 | 272 |
| Q2 2024 | 311 | 258 |
| Q3 2024 | 272 | 312 |
| Q4 2024 | 258 | 276 |
| Q1 2025 | 293 | 292 |
| Q2 2025 | 332 | 283 |
| Q3 2025 | 284 | 326 |
| Q4 2025 | 264 | 308 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q1 2025 | $3.7m | $2.0m | 0.55 |
| Q2 2025 | $3.6m | $2.8m | 0.79 |
| Q3 2025 | $4.5m | $1.5m | 0.33 |
| Q4 2025 | $20.5m | $1.9m | 0.09 |
Biggest buyers
| PRIMECAP MANAGEMENT CO/CA/ | Added | +1.5m |
| Dodge & Cox | Added | +918.2k |
| MILLENNIUM MANAGEMENT LLC | Added | +793.5k |
| Balyasny Asset Management L.P. | Added | +718.1k |
| Interval Partners, LP | New | +333.8k |
| UBS Group AG | Added | +286.1k |
| Schonfeld Strategic Advisors LLC | Added | +285.5k |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | Added | +269.3k |
| AMERICAN CENTURY COMPANIES INC | New | +262.6k |
| CITADEL ADVISORS LLC | Added | +217.9k |
Biggest sellers
| WELLINGTON MANAGEMENT GROUP LLP | Reduced | -785.4k |
| T. Rowe Price Investment Management, Inc. | Reduced | -636.9k |
| JPMORGAN CHASE & CO | Reduced | -465.8k |
| Pictet Asset Management Holding SA | Reduced | -328.3k |
| Squarepoint Ops LLC | Reduced | -288.1k |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC | Reduced | -286.6k |
| Impax Asset Management Group plc | Reduced | -252.0k |
| PRICE T ROWE ASSOCIATES INC /MD/ | Reduced | -205.4k |
| Allianz Asset Management GmbH | Reduced | -193.1k |
| GOLDMAN SACHS GROUP INC | Reduced | -190.9k |
Biggest calls
| Waratah Capital Advisors Ltd. | New | $11.0m61.8k shares |
| SIG BROKERAGE, LP | New | $3.3m18.8k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $2.6m14.5k shares |
| UBS Group AG | Unchanged | $2.2m12.3k shares |
| SIMPLEX TRADING, LLC | New | $1.2m6.5k shares |
| CITADEL ADVISORS LLC | Reduced | $249.1k1.4k shares |
Biggest puts
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $1.0m5.7k shares |
| CITADEL ADVISORS LLC | Added | $658.4k3.7k shares |
| JANE STREET GROUP, LLC | New | $213.5k1.2k shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| VANGUARD CAPITAL MANAGEMENT LLC 13G · institution new · filed 2026-04-30 | 7.5% |
| VANGUARD PORTFOLIO MANAGEMENT LLC 13G · institution new · filed 2026-04-29 | 5.1% |
Fell to 5% or below in the last year: WELLINGTON MANAGEMENT GROUP LLP (2.3%, 2026-05-15), VANGUARD GROUP INC (0.0%, 2026-03-27; now reported by VANGUARD CAPITAL MANAGEMENT LLC)
Insider purchases and sales in Q4 2025
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q1 2024 | 0 | — | 0 | — | — |
| Q2 2024 | 0 | — | 0 | — | — |
| Q3 2024 | 0 | — | 0 | — | — |
| Q4 2024 | 0 | — | 0 | — | — |
| Q1 2025 | 0 | — | 0 | — | — |
| Q2 2025 | 0 | — | 1 | $45.2k | — |
| Q3 2025 | 1 | $399.0k | 0 | — | — |
| Q4 2025 | 1 | $101.6k | 0 | — | — |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2025-11-05 | Christenson Carl R Director | Bought | $101.6k600 shares |
Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).
Holders, Q4 2025
| Manager | Shares | Change |
|---|---|---|
| VANGUARD GROUP INC 0.02% of their portfolio | 9.0m $1.6bn | Reduced -100.4k |
| WELLINGTON MANAGEMENT GROUP LLP 0.18% of their portfolio | 5.7m $1.0bn | Reduced -785.4k |
| BlackRock, Inc. 0.02% of their portfolio | 5.7m $1.0bn | Added +5.3k |
| MORGAN STANLEY 0.03% of their portfolio | 3.3m $581.2m | Reduced -104.4k |
| PRIMECAP MANAGEMENT CO/CA/ 0.43% of their portfolio | 3.2m $574.2m | Added +1.5m |
| STATE STREET CORP 0.02% of their portfolio | 3.2m $564.5m | Added +17.7k |
| NORDEA INVESTMENT MANAGEMENT AB 0.34% of their portfolio | 2.3m $401.4m | Reduced -109.2k |
| GEODE CAPITAL MANAGEMENT, LLC 0.02% of their portfolio | 2.0m $360.7m | Added +7.8k |
| VAN ECK ASSOCIATES CORP 0.29% of their portfolio | 2.0m $351.8m | Added +63.7k |
| Impax Asset Management Group plc 1.90% of their portfolio | 1.7m $304.1m | Reduced -252.0k |
| Invesco Ltd. 0.03% of their portfolio | 1.7m $301.1m | Reduced -117.6k |
| Amundi 0.07% of their portfolio | 1.5m $264.7m | Reduced -30.2k |
| Dodge & Cox 0.12% of their portfolio | 1.3m $224.7m | Added +918.2k |
| MILLENNIUM MANAGEMENT LLC 0.14% of their portfolio | 1.1m $189.3m | Added +793.5k |
| NORGES BANK 0.02% of their portfolio | 914.9k $162.8m | Not comparable |
| UBS Group AG 0.03% of their portfolio | 894.4k $159.1m | Added +286.1k |
| FIRST TRUST ADVISORS LP 0.11% of their portfolio | 877.0k $156.0m | Reduced -125.5k |
| Champlain Investment Partners, LLC 1.50% of their portfolio | 830.6k $147.8m | Reduced -111.3k |
| Fenimore Asset Management Inc 3.04% of their portfolio | 819.2k $145.8m | Reduced -55.5k |
| FLOSSBACH VON STORCH SE 0.56% of their portfolio | 798.1k $142.0m | Added +7.1k |
| DIMENSIONAL FUND ADVISORS LP 0.03% of their portfolio | 784.4k $139.6m | Added +164.2k |
| NORTHERN TRUST CORP 0.02% of their portfolio | 748.4k $133.2m | Reduced -17.6k |
| Balyasny Asset Management L.P. 0.24% of their portfolio | 720.1k $128.1m | Added +718.1k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.03% of their portfolio | 707.0k $125.8m | Added +13.9k |
| Alecta Tjanstepension Omsesidigt 0.54% of their portfolio | 689.9k $122.7m | Unchanged |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.02% of their portfolio | 667.1k $118.7m | Added +8.1k |
| Fisher Asset Management, LLC 0.04% of their portfolio | 655.6k $116.7m | Reduced -69.2k |
| CITADEL ADVISORS LLC 0.07% of their portfolio | 554.8k $98.7m | Added +217.9k |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 0.14% of their portfolio | 522.7k $93.0m | Added +12.3k |
| GOLDMAN SACHS GROUP INC 0.01% of their portfolio | 494.3k $88.0m | Reduced -190.9k |
| DEUTSCHE BANK AG\ 0.03% of their portfolio | 489.4k $87.1m | Added +100.2k |
| Bank of New York Mellon Corp 0.02% of their portfolio | 488.1k $86.9m | Reduced -128.0k |
| Legal & General Group Plc 0.02% of their portfolio | 483.7k $86.1m | Reduced -12.8k |
| SNYDER CAPITAL MANAGEMENT L P 1.58% of their portfolio | 475.0k $84.5m | Reduced -14.7k |
| HSBC HOLDINGS PLC 0.02% of their portfolio | 468.4k $83.4m | Added +214.4k |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 0.05% of their portfolio | 463.3k $82.4m | Added +269.3k |
| Boston Trust Walden Corp 0.62% of their portfolio | 462.7k $82.3m | Added +80.5k |
| Corient Private Wealth LP 0.05% of their portfolio | 432.5k $76.6m | Added +209.6k |
| Robeco Schweiz AG 1.65% of their portfolio | 412.6k $73.4m | Added +141.5k |
| Pictet Asset Management Holding SA 0.07% of their portfolio | 411.1k $73.1m | Reduced -328.3k |
| WESTFIELD CAPITAL MANAGEMENT CO LP 0.30% of their portfolio | 402.0k $71.5m | Added +3.7k |
| WEITZ INVESTMENT MANAGEMENT, INC. 4.13% of their portfolio | 391.5k $69.7m | Reduced -15.0k |
| Findlay Park Partners LLP 0.84% of their portfolio | 370.4k $65.9m | Reduced -74.5k |
| DEPRINCE RACE & ZOLLO INC 1.22% of their portfolio | 359.2k $63.9m | Added +15.0k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 348.3k $62.0m | Reduced -465.8k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 347.4k $61.8m | Reduced -54.3k |
| STATE FARM MUTUAL AUTOMOBILE INSURANCE CO 0.05% of their portfolio | 335.9k $59.8m | Unchanged |
| Interval Partners, LP 1.39% of their portfolio | 333.8k $59.4m | New |
| Schonfeld Strategic Advisors LLC 0.26% of their portfolio | 295.7k $52.6m | Added +285.5k |
| SCHRODER INVESTMENT MANAGEMENT GROUP 0.04% of their portfolio | 277.1k $49.7m | Reduced -39.1k |
| ADAGE CAPITAL PARTNERS GP, L.L.C. 0.07% of their portfolio | 273.5k $48.7m | Added +29.0k |
| BARCLAYS PLC 0.02% of their portfolio | 269.3k $47.9m | Reduced -84.6k |
| AMERICAN CENTURY COMPANIES INC 0.02% of their portfolio | 262.6k $46.7m | New |
| AQR CAPITAL MANAGEMENT LLC 0.02% of their portfolio | 257.9k $45.9m | Added +139.7k |
| TWO SIGMA INVESTMENTS, LP 0.07% of their portfolio | 257.0k $45.7m | Reduced -72.3k |
| JOHNSON INVESTMENT COUNSEL INC 0.35% of their portfolio | 241.2k $42.9m | Reduced -61.7k |
| Ensign Peak Advisors, Inc 0.07% of their portfolio | 237.3k $42.2m | Reduced -36.4k |
| FIL Ltd 0.03% of their portfolio | 223.9k $39.8m | Added +61.0k |
| Maren Capital LLC 2.06% of their portfolio | 215.0k $38.3m | Reduced -33.9k |
| Swiss National Bank 0.02% of their portfolio | 205.9k $36.6m | Reduced -11.9k |
| BROWN ADVISORY INC 0.05% of their portfolio | 204.4k $36.4m | Added +5.6k |
| BLI - Banque de Luxembourg Investments 0.99% of their portfolio | 188.9k $33.9m | Added +34.1k |
| Evelyn Partners Investment Management LLP 0.91% of their portfolio | 185.4k $33.0m | Added +15.6k |
| KING LUTHER CAPITAL MANAGEMENT CORP 0.13% of their portfolio | 185.0k $32.9m | Reduced -53.1k |
| GABELLI FUNDS LLC 0.22% of their portfolio | 181.1k $32.2m | Reduced -9.8k |
| Qube Research & Technologies Ltd 0.05% of their portfolio | 179.4k $31.9m | Reduced -132.2k |
| Premier Fund Managers Ltd 1.84% of their portfolio | 177.9k $31.9m | Reduced -83.7k |
| Nuveen, LLC 0.01% of their portfolio | 175.7k $31.3m | Added +12.6k |
| ASR Vermogensbeheer N.V. 0.35% of their portfolio | 171.5k $30.5m | Added +11.5k |
| GAMCO INVESTORS, INC. ET AL 0.29% of their portfolio | 170.8k $30.4m | Reduced -3.6k |
| TWO SIGMA ADVISERS, LP 0.06% of their portfolio | 170.1k $30.3m | Reduced -50.9k |
| Sumitomo Mitsui Trust Group, Inc. 0.02% of their portfolio | 169.1k $30.1m | Reduced -5.5k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 168.7k $30.0m | Reduced -205.4k |
| California Public Employees Retirement System 0.02% of their portfolio | 165.6k $29.5m | Reduced -13.2k |
| RHUMBLINE ADVISERS 0.02% of their portfolio | 164.9k $29.3m | Reduced -5.7k |
| Mitsubishi UFJ Asset Management Co., Ltd. 0.02% of their portfolio | 160.5k $28.7m | Added +6.9k |
| Point72 Asset Management, L.P. 0.04% of their portfolio | 157.1k $28.0m | Added +149.3k |
| MARSHALL WACE, LLP 0.03% of their portfolio | 155.2k $27.6m | Added +111.6k |
| CIBC Private Wealth Group LLC 0.05% of their portfolio | 153.8k $27.4m | Reduced -18.5k |
| Universal- Beteiligungs- und Servicegesellschaft mbH 0.04% of their portfolio | 153.6k $27.5m | Reduced -527 |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC 0.09% of their portfolio | 136.3k $24.3m | Reduced -286.6k |
| Russell Investments Group, Ltd. 0.03% of their portfolio | 134.6k $24.0m | Added +24.9k |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.02% of their portfolio | 132.6k $23.6m | Reduced -3.6k |
| NICHOLAS COMPANY, INC. 0.41% of their portfolio | 132.5k $23.6m | Reduced -30 |
| AMERIPRISE FINANCIAL INC 0.01% of their portfolio | 126.0k $22.4m | Reduced -2.2k |
| CITIGROUP INC 0.01% of their portfolio | 121.5k $21.6m | Added +6.9k |
| MOUNTAIN PACIFIC INVESTMENT ADVISERS LLC 3.47% of their portfolio | 120.4k $21.4m | Reduced -863 |
| D. E. Shaw & Co., Inc. 0.02% of their portfolio | 119.5k $21.3m | Reduced -131.3k |
| NUANCE INVESTMENTS, LLC 2.30% of their portfolio | 117.4k $20.9m | Reduced -45.1k |
| Zurcher Kantonalbank (Zurich Cantonalbank) 0.04% of their portfolio | 113.4k $20.2m | Reduced -36.4k |
| DekaBank Deutsche Girozentrale 0.05% of their portfolio | 113.0k $27.6m | Unchanged |
| HARVEY INVESTMENT CO LLC 2.09% of their portfolio | 110.2k $19.6m | Added +845 |
| Port Capital LLC 0.84% of their portfolio | 109.2k $19.4m | Reduced -633 |
| Engineers Gate Manager LP 0.23% of their portfolio | 107.7k $19.2m | Added +99.6k |
| Tredje AP-fonden 0.14% of their portfolio | 104.9k $18.7m | Added +94.3k |
| Northwest & Ethical Investments L.P. 0.42% of their portfolio | 104.7k $18.6m | Reduced -8.9k |
| SEI INVESTMENTS CO 0.02% of their portfolio | 103.7k $18.4m | Reduced -48.5k |
| Curi Capital, LLC 0.32% of their portfolio | 102.1k $18.2m | Added +4.5k |
| Clarkston Capital Partners, LLC 0.41% of their portfolio | 99.8k $17.8m | Reduced -200 |
| EVENTIDE ASSET MANAGEMENT, LLC 0.28% of their portfolio | 99.1k $17.7m | Added +2.8k |