IDEX Corporation
US ˙ NYSE ˙ US45167R1041

SecurityIEX / IDEX Corporation
InstitutionDimensional Fund Advisors Lp
Latest Disclosed Ownership815,529 shares
Latest Disclosed Value $ 154,555,411
Dimensional Fund Advisors Lp reports 3.97% increase in ownership of IEX / IDEX Corporation

On May 7, 2026 - Dimensional Fund Advisors Lp filed a 13F-HR form disclosing ownership of 815,529 shares of IDEX Corporation (US:IEX) valued at $154,583,522 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 784,354 shares of IDEX Corporation. This represents a change in shares of 3.97% during the quarter. The current value of the position is $175,624,170 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)
2026-05-07 2026-03-31 13F IDEX COM 45167R104 815,529 31,175 3.97 154,555 10.73 0.0321
2026-02-12 2025-12-31 13F IDEX COM 45167R104 784,354 164,179 26.47 139,573 38.28 0.0293
2025-11-12 2025-09-30 13F IDEX COM 45167R104 620,175 17,591 2.92 100,935 -4.60 0.0217
2025-08-12 2025-06-30 13F IDEX COM 45167R104 602,584 -82,622 -12.06 105,804 -14.67 0.0245
2025-05-13 2025-03-31 13F IDEX COM 45167R104 685,206 44,489 6.94 123,996 -7.53 0.0308
2025-02-13 2024-12-31 13F IDEX COM 45167R104 640,717 73,540 12.97 134,096 10.22 0.0322
2024-11-07 2024-09-30 13F IDEX COM 45167R104 567,177 96,505 20.50 121,661 28.47 0.0295
2024-08-09 2024-06-30 13F IDEX COM 45167R104 470,672 78,551 20.03 94,698 -1.03 0.0247
2024-05-10 2024-03-31 13F IDEX COM 45167R104 392,121 22,853 6.19 95,685 19.35 0.0259
2024-02-07 2023-12-31 13F IDEX COM 45167R104 369,268 20,785 5.96 80,172 10.59 0.0234
2023-11-09 2023-09-30 13F IDEX COM 45167R104 348,483 1,760 0.51 72,496 -2.86 0.0238
2023-08-09 2023-06-30 13F IDEX COM 45167R104 346,723 4,709 1.38 74,633 -5.54 0.0238
2023-05-12 2023-03-31 13F IDEX COM 45167R104 342,014 -8,000 -2.29 79,008 99,908.86 0.0266
2023-02-09 2022-12-31 13F IDEX COM 45167R104 350,014 -1,495 -0.43 80 -99.89 0.0236
2022-11-10 2022-09-30 13F IDEX COM 45167R104 351,509 3,700 1.06 70,253 11.22 0.0270
2022-08-12 2022-06-30 13F IDEX COM 45167R104 347,809 -3,067 -0.87 63,167 -6.12 0.0227
2022-05-13 2022-03-31 13F IDEX COM 45167R104 350,876 766 0.22 67,283 -18.68 0.0207
2022-02-09 2021-12-31 13F IDEX COM 45167R104 350,110 -12,486 -3.44 82,735 10.23 0.0250
2021-11-12 2021-09-30 13F IDEX COM 45167R104 362,596 -9,372 -2.52 75,056 -8.30 0.0242
2021-08-12 2021-06-30 13F IDEX COM 45167R104 371,968 -11,034 -2.88 81,852 2.09 0.0259
2021-05-14 2021-03-31 13F IDEX COM 45167R104 383,002 2,172 0.57 80,173 5.69 0.0265
2021-03-08 2020-12-31 13F/A-2 IDEX COM 45167R104 380,830 12,397 3.36 75,855 12.88 0.0274
2021-02-11 2020-12-31 13F IDEX COM 45167R104 380,830 12,397 75,855 27,394.7941
2020-11-12 2020-09-30 13F IDEX COM 45167R104 368,433 -18,010 -4.66 67,201 10.06 0.0285
2020-08-13 2020-06-30 13F IDEX COM 45167R104 386,443 1,739 0.45 61,061 14.94 0.0268
2020-05-14 2020-03-31 13F IDEX COM 45167R104 384,704 9,584 2.55 53,125 -17.66 0.0277
2020-02-14 2019-12-31 13F IDEX COM 45167R104 375,120 -37 -0.01 64,522 4.94 0.0235
2019-11-12 2019-09-30 13F IDEX COM 45167R104 375,157 23,121 6.57 61,483 1.47 0.0239
2019-08-13 2019-06-30 13F IDEX COM 45167R104 352,036 4,572 1.32 60,595 14.93 0.0235
2019-08-12 2019-03-31 13F/A-2 IDEX COM 45167R104 347,464 3,741 1.09 52,725 21.50 0.0210
2019-05-10 2019-03-31 13F IDEX COM 45167R104 347,464 3,741 52,725
2019-02-26 2018-12-31 13F/A-1 IDEX COM 45167R104 343,723 19,354 5.97 43,396 -11.21 0.0197
2019-02-13 2018-12-31 13F IDEX COM 45167R104 343,723 19,354 43,396
2018-11-13 2018-09-30 13F IDEX COM 45167R104 324,369 3,945 1.23 48,873 11.76 0.0186
2018-08-10 2018-06-30 13F IDEX COM 45167R104 320,424 675 0.21 43,730 -4.03 0.0174
2018-05-11 2018-03-31 13F IDEX COM 45167R104 319,749 -11,356 -3.43 45,567 4.28 0.0190
2018-02-12 2017-12-31 13F IDEX COM 45167R104 331,105 -50,888 -13.32 43,698 -5.83 0.0181
2017-11-13 2017-09-30 13F IDEX COM 45167R104 381,993 3,092 0.82 46,403 8.38 0.0203
2017-08-11 2017-06-30 13F IDEX COM 45167R104 378,901 1,597 0.42 42,817 21.36 0.0198
2017-05-12 2017-03-31 13F IDEX COM 45167R104 377,304 5,634 1.52 35,280 5.40 0.0169
2017-02-09 2016-12-31 13F IDEX COM 45167R104 371,670 -169 -0.05 33,473 -3.79 0.0167
2016-11-10 2016-09-30 13F IDEX COM 45167R104 371,839 -31,590 -7.83 34,792 5.05 0.0188
2016-08-09 2016-06-30 13F IDEX COM 45167R104 403,429 -38,876 -8.79 33,118 -9.66 0.0191
2016-05-13 2016-03-31 13F IDEX COM 45167R104 442,305 4,438 1.01 36,659 9.28 0.0219
2016-02-10 2015-12-31 13F IDEX COM 45167R104 437,867 11,340 2.66 33,546 10.31 0.0209
2015-11-13 2015-09-30 13F IDEX COM 45167R104 426,527 -13,108 -2.98 30,411 -11.97 0.0200
2015-08-14 2015-06-30 13F IDEX COM 45167R104 439,635 27,704 6.73 34,547 10.60 0.0212
2015-05-14 2015-03-31 13F IDEX COM 45167R104 411,931 51,692 14.35 31,236 11.39 0.0197
2015-02-06 2014-12-31 13F IDEX COM 45167R104 360,239 49,127 15.79 28,042 24.53 0.0184
2014-11-13 2014-09-30 13F IDEX COM 45167R104 311,112 1,997 0.65 22,518 -9.77 0.0160
2014-08-08 2014-06-30 13F IDEX COM 45167R104 309,115 -402 -0.13 24,957 10.64 0.0173
2014-05-14 2014-03-31 13F IDEX COM 45167R104 309,517 -1,322 -0.43 22,557 -1.73 0.0169
2014-02-12 2013-12-31 13F IDEX COM 45167R104 310,839 -6,265 -1.98 22,954 10.95 0.0179
2013-11-13 2013-09-30 13F IDEX COM 45167R104 317,104 -1,352 -0.42 20,689 20.73 0.0179
2013-08-15 2013-06-30 13F IDEX COM 45167R104 318,456 318,456 17,136 0.0161
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.