IDEX Corporation
US ˙ NYSE ˙ US45167R1041

SecurityIEX / IDEX Corporation
InstitutionNatixis Advisors, L.p.
Latest Disclosed Ownership20,984 shares
Latest Disclosed Value $ 3,978
Natixis Advisors, L.p. reports 10.80% increase in ownership of IEX / IDEX Corporation

On May 13, 2026 - Natixis Advisors, L.p. filed a 13F-HR form disclosing ownership of 20,984 shares of IDEX Corporation (US:IEX) valued at $3,977,517 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 18,939 shares of IDEX Corporation. This represents a change in shares of 10.80% during the quarter. The current value of the position is $4,518,695 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)
2026-05-13 2026-03-31 13F IDEX COM 45167R104 20,984 2,045 10.80 4 0.00 0.0055
2026-02-10 2025-12-31 13F IDEX COM 45167R104 18,939 -7,037 -27.09 3 -25.00 0.0048
2025-11-13 2025-09-30 13F IDEX CORP COM 45167R104 25,976 -11,571 -30.82 4 -33.33 0.0062
2025-08-13 2025-06-30 13F IDEX COM 45167R104 37,547 7,753 26.02 7 20.00 0.0105
2025-05-08 2025-03-31 13F IDEX COM 45167R104 29,794 -5,090 -14.59 5 -28.57 0.0100
2025-02-10 2024-12-31 13F IDEX COM 45167R104 34,884 -2,151 -5.81 7 0.00 0.0136
2024-11-06 2024-09-30 13F IDEX COM 45167R104 37,035 11,046 42.50 8 40.00 0.0155
2024-08-01 2024-06-30 13F IDEX COM 45167R104 25,989 -4,861 -15.76 5 -28.57 0.0114
2024-04-25 2024-03-31 13F IDEX COM 45167R104 30,850 1,697 5.82 8 16.67 0.0173
2024-02-06 2023-12-31 13F IDEX COM 45167R104 29,153 -20,498 -41.28 6 -40.00 0.0167
2023-11-13 2023-09-30 13F IDEX COM 45167R104 49,651 1,230 2.54 10 0.00 0.0316
2023-08-15 2023-06-30 13F IDEX COM 45167R104 48,421 3,261 7.22 10 0.00 0.0322
2023-05-11 2023-03-31 13F IDEX COM 45167R104 45,160 -514 -1.13 10 0.00 0.0359
2023-01-27 2022-12-31 13F IDEX COM 45167R104 45,674 -1,241 -2.65 10 -99.89 0.0394
2022-11-14 2022-09-30 13F IDEX CORPORATION DELAWARE COM 45167R104 46,915 -770 -1.61 9,376 8.26 0.0397
2022-08-12 2022-06-30 13F IDEX COM 45167R104 47,685 10,109 26.90 8,661 20.22 0.0381
2022-05-12 2022-03-31 13F IDEX COM 45167R104 37,576 -4,248 -10.16 7,204 -27.11 0.0275
2022-02-08 2021-12-31 13F IDEX COM 45167R104 41,824 3,710 9.73 9,884 25.30 0.0377
2021-11-15 2021-09-30 13F IDEX COM 45167R104 38,114 28 0.07 7,888 -5.88 0.0324
2021-08-12 2021-06-30 13F IDEX COM 45167R104 38,086 2,784 7.89 8,381 13.43 0.0391
2021-05-05 2021-03-31 13F IDEX COM 45167R104 35,302 581 1.67 7,389 6.84 0.0386
2021-02-12 2020-12-31 13F IDEX COM 45167R104 34,721 -11,513 -24.90 6,916 -18.00 0.0398
2020-11-12 2020-09-30 13F IDEX CORPORATION DELAWARE COM 45167R104 46,234 -879 -1.87 8,434 13.27 0.0531
2020-08-11 2020-06-30 13F IDEX CORPORATION DELAWARE COM 45167R104 47,113 11,325 31.64 7,446 50.64 0.0494
2020-04-27 2020-03-31 13F IDEX COM 45167R104 35,788 545 1.55 4,943 -18.46 0.0403
2020-02-10 2019-12-31 13F IDEX COM 45167R104 35,243 4,951 16.34 6,062 22.12 0.0428
2019-11-12 2019-09-30 13F IDEX COM 45167R104 30,292 3,104 11.42 4,964 6.07 0.0394
2019-08-12 2019-06-30 13F IDEX COM 45167R104 27,188 -119 -0.44 4,680 12.93 0.0382
2019-05-15 2019-03-31 13F/A-1 IDEX COM 45167R104 27,307 9,918 57.04 4,144 88.79 0.0363
2019-05-15 2019-03-31 13F IDEX COM 45167R104 27,307 9,918 4,144
2019-02-13 2018-12-31 13F/A-1 IDEX COM 45167R104 17,389 -1,758 -9.18 2,195 -23.92 0.0217
2019-02-13 2018-12-31 13F IDEX COM 45167R104 17,389 -1,758 2,195
2018-11-13 2018-09-30 13F IDEX COM 45167R104 19,147 -1,449 -7.04 2,885 2.63 0.0254
2018-08-14 2018-06-30 13F/A-1 IDEX COM 45167R104 20,596 97 0.47 2,811 -3.77 0.0269
2018-08-14 2018-06-30 13F IDEX COM 45167R104 20,596 2,811
2018-05-10 2018-03-31 13F IDEX COM 45167R104 20,499 -1,492 -6.78 2,921 0.65 0.0288
2018-02-14 2017-12-31 13F IDEX COM 45167R104 21,991 -952 -4.15 2,902 4.16 0.0296
2017-11-14 2017-09-30 13F IDEX COM 45167R104 22,943 -935 -3.92 2,786 3.26 0.0294
2017-07-27 2017-06-30 13F IDEX COM 45167R104 23,878 -2,283 -8.73 2,698 10.30 0.0292
2017-05-12 2017-03-31 13F IDEX COM 45167R104 26,161 -421 -1.58 2,446 2.17 0.0271
2017-02-07 2016-12-31 13F IDEX COM 45167R104 26,582 1,628 6.52 2,394 2.53 0.0288
2016-11-04 2016-09-30 13F IDEX COM 45167R104 24,954 -1,523 -5.75 2,335 7.41 0.0302
2016-08-01 2016-06-30 13F IDEX COM 45167R104 26,477 -1,325 -4.77 2,174 -5.64 0.0301
2016-05-06 2016-03-31 13F IDEX COM 45167R104 27,802 -277 -0.99 2,304 7.11 0.0345
2016-02-12 2015-12-31 13F IDEX COM 45167R104 28,079 -1,255 -4.28 2,151 2.82 0.0353
2015-11-12 2015-09-30 13F IDEX COM 45167R104 29,334 -1,032 -3.40 2,092 -12.32 0.0363
2015-08-14 2015-06-30 13F IDEX COM 45167R104 30,366 -2,625 -7.96 2,386 -4.64 0.0405
2015-05-15 2015-03-31 13F IDEX COM 45167R104 32,991 1,730 5.53 2,502 2.79 0.0439
2015-02-05 2014-12-31 13F IDEX COM 45167R104 31,261 2,004 6.85 2,434 14.92 0.0456
2014-11-03 2014-09-30 13F IDEX COM 45167R104 29,257 -732 -2.44 2,118 -12.52 0.0425
2014-08-13 2014-06-30 13F IDEX COM 45167R104 29,989 9,702 47.82 2,421 63.69 0.0347
2014-05-13 2014-03-31 13F IDEX COM 45167R104 20,287 1,709 9.20 1,479 7.80 0.0228
2014-02-12 2013-12-31 13F IDEX COM 45167R104 18,578 -218 -1.16 1,372 11.91 0.0225
2013-10-30 2013-09-30 13F IDEX COM 45167R104 18,796 1,967 11.69 1,226 35.32 0.0226
2013-07-19 2013-06-30 13F IDEX COM 45167R104 16,829 16,829 906 0.0181
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.