IDEX Corporation
US ˙ NYSE ˙ US45167R1041

SecurityIEX / IDEX Corporation
InstitutionSei Investments Co
Latest Disclosed Ownership103,663 shares
Latest Disclosed Value $ 18,446,505
Sei Investments Co reports 31.86% decrease in ownership of IEX / IDEX Corporation

On February 13, 2026 - Sei Investments Co filed a 13F-HR form disclosing ownership of 103,663 shares of IDEX Corporation (US:IEX) valued at $18,445,794 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 13, 2025 disclosing 152,141 shares of IDEX Corporation. This represents a change in shares of -31.86% during the quarter. The current value of the position is $22,322,790 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)
2026-02-13 2025-12-31 13F IDEX COM 45167R104 103,663 -48,478 -31.86 18,447 -25.51 0.0182
2025-11-13 2025-09-30 13F IDEX COM 45167R104 152,141 8,694 6.06 24,764 -1.68 0.0266
2025-08-14 2025-06-30 13F IDEX COM 45167R104 143,447 -34,827 -19.54 25,185 -21.93 0.0292
2025-05-14 2025-03-31 13F/A-1 IDEX COM 45167R104 178,274 40,641 29.53 32,261 11.99 0.0415
2025-05-13 2025-03-31 13F IDEX COM 45167R104 135,528 -2,105 28,030 0.0305
2025-02-11 2024-12-31 13F IDEX COM 45167R104 137,633 -207 -0.15 28,807 -2.57 0.0370
2024-11-12 2024-09-30 13F IDEX COM 45167R104 137,840 20,883 17.86 29,567 25.65 0.0384
2024-08-13 2024-06-30 13F IDEX COM 45167R104 116,957 15,616 15.41 23,532 -4.84 0.0333
2024-05-07 2024-03-31 13F IDEX COM 45167R104 101,341 -3,721 -3.54 24,729 8.41 0.0362
2024-02-14 2023-12-31 13F IDEX COM 45167R104 105,062 -15,691 -12.99 22,810 -9.19 0.0366
2023-11-14 2023-09-30 13F IDEX COM 45167R104 120,753 1,253 1.05 25,119 -2.35 0.0451
2023-08-11 2023-06-30 13F IDEX COM 45167R104 119,500 3,872 3.35 25,724 -3.71 0.0449
2023-05-12 2023-03-31 13F IDEX COM 45167R104 115,628 20,747 21.87 26,714 23.31 0.0496
2023-02-10 2022-12-31 13F IDEX COM 45167R104 94,881 -7,493 -7.32 21,664 5.88 0.0481
2022-11-14 2022-09-30 13F IDEX COM 45167R104 102,374 14,310 16.25 20,460 27.93 0.0456
2022-08-15 2022-06-30 13F IDEX COM 45167R104 88,064 5,240 6.33 15,993 0.73 0.0345
2022-05-13 2022-03-31 13F IDEX COM 45167R104 82,824 16,117 24.16 15,877 0.70 0.0319
2022-02-14 2021-12-31 13F IDEX COM 45167R104 66,707 9,592 16.79 15,766 33.40 0.0296
2021-11-12 2021-09-30 13F IDEX COM 45167R104 57,115 -29,494 -34.05 11,819 -37.98 0.0248
2021-08-06 2021-06-30 13F IDEX COM 45167R104 86,609 3,057 3.66 19,058 9.30 0.0423
2021-05-12 2021-03-31 13F IDEX COM 45167R104 83,552 1,603 1.96 17,436 6.81 0.0439
2021-02-08 2020-12-31 13F IDEX COM 45167R104 81,949 -10,985 -11.82 16,324 -3.70 0.0422
2020-12-04 2020-09-30 13F/A-1 IDEX COM 45167R104 92,934 -4,743 -4.86 16,952 9.81 0.0491
2020-11-06 2020-09-30 13F IDEX COM 45167R104 93,673 -4,004 17,087 41,141.6969
2020-08-17 2020-06-30 13F/A-1 IDEX COM 45167R104 97,677 -542 -0.55 15,437 13.78 0.0479
2020-08-11 2020-06-30 13F IDEX COM 45167R104 68,014 -30,205 11,567 31,376.1032
2020-05-14 2020-03-31 13F IDEX COM 45167R104 98,219 30,583 45.22 13,567 16.63 0.0498
2020-02-06 2019-12-31 13F IDEX COM 45167R104 67,636 -37,191 -35.48 11,633 -32.28 0.0347
2019-11-12 2019-09-30 13F IDEX COM 45167R104 104,827 -3,625 -3.34 17,179 -7.98 0.0439
2019-08-14 2019-06-30 13F IDEX COM 45167R104 108,452 14,154 15.01 18,669 30.47 0.0610
2019-05-15 2019-03-31 13F IDEX COM 45167R104 94,298 5,737 6.48 14,309 9.50 0.0481
2019-02-13 2018-12-31 13F IDEX COM 45167R104 88,561 11,136 14.38 13,068 12.07 0.0465
2018-11-08 2018-09-30 13F IDEX COM 45167R104 77,425 -2,722 -3.40 11,661 6.61 0.0423
2018-08-03 2018-06-30 13F IDEX COM 45167R104 80,147 2,610 3.37 10,938 -1.02 0.0372
2018-05-11 2018-03-31 13F IDEX COM 45167R104 77,537 -40,857 -34.51 11,051 -29.27 0.0424
2018-02-08 2017-12-31 13F IDEX COM 45167R104 118,394 9,361 8.59 15,625 17.98 0.0543
2017-11-06 2017-09-30 13F IDEX COM 45167R104 109,033 -4,588 -4.04 13,244 3.15 0.0471
2017-07-31 2017-06-30 13F IDEX COM 45167R104 113,621 -14,785 -11.51 12,840 6.95 0.0512
2017-05-05 2017-03-31 13F IDEX COM 45167R104 128,406 13,505 11.75 12,006 16.02 0.0526
2017-02-02 2016-12-31 13F IDEX COM 45167R104 114,901 -4,635 -3.88 10,348 -7.48 0.0501
2016-11-04 2016-09-30 13F IDEX COM 45167R104 119,536 -8,352 -6.53 11,185 6.52 0.0568
2016-08-11 2016-06-30 13F IDEX COM 45167R104 127,888 11,044 9.45 10,500 8.43 0.0630
2016-05-10 2016-03-31 13F/A-1 IDEX COM 45167R104 116,844 3,158 2.78 9,684 11.20 0.0603
2016-02-03 2015-12-31 13F IDEX COM 45167R104 113,686 107,059 1,615.50 8,709 1,745.13 0.0531
2015-11-02 2015-09-30 13F/A-1 IDEX COM 45167R104 6,627 5,674 595.38 472 529.33 0.0043
2015-10-30 2015-09-30 13F DIREXION SHS ETF TR COM 45167R104 6,627 474
2015-08-07 2015-06-30 13F/A-1 IDEX COM 45167R104 953 103 12.12 75 19.05 0.0007
2015-08-04 2015-06-30 13F IDEX COM 45167R104 953 103 75 0.0007
2015-05-14 2015-03-31 13F/A-1 IDEX COM 45167R104 850 -97 -10.24 63 -13.70 0.0005
2015-05-01 2015-03-31 13F IDEX COM 45167R104 850 63
2015-02-10 2014-12-31 13F IDEX COM 45167R104 947 947 73 0.0006
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.