IDEX Corporation
US ˙ NYSE ˙ US45167R1041

SecurityIEX / IDEX Corporation
InstitutionFirst Manhattan Co
Latest Disclosed Ownership3,778 shares
Latest Disclosed Value $ 716,120
First Manhattan Co ownership in IEX / IDEX Corporation

On May 15, 2026 - First Manhattan Co filed a 13F-HR form disclosing ownership of 3,778 shares of IDEX Corporation (US:IEX) valued at $716,120 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 3,778 shares of IDEX Corporation. This represents a change in shares of 0.00% during the quarter. The current value of the position is $813,555 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)
2026-05-15 2026-03-31 13F IDEX COM 45167R104 3,778 0 0.00 716 6.55 0.0020
2026-02-17 2025-12-31 13F IDEX COM 45167R104 3,778 0 0.00 672 9.45 0.0018
2025-11-14 2025-09-30 13F IDEX COM 45167R104 3,778 0 0.00 615 -7.39 0.0016
2025-08-14 2025-06-30 13F IDEX COM 45167R104 3,778 0 0.00 663 -2.93 0.0019
2025-05-15 2025-03-31 13F IDEX COM 45167R104 3,778 0 0.00 684 -13.54 0.0020
2025-02-14 2024-12-31 13F IDEX COM 45167R104 3,778 1,125 42.40 791 38.84 0.0023
2024-11-14 2024-09-30 13F IDEX COM 45167R104 2,653 -89 -3.25 569 3.27 0.0017
2024-08-15 2024-06-30 13F/A-1 IDEX COM 45167R104 2,742 89 3.35 552 -14.84 0.0018
2024-08-14 2024-06-30 13F IDEX COM 45167R104 2,742 89 552 0.0018
2024-05-15 2024-03-31 13F IDEX COM 45167R104 2,653 0 0.00 647 12.52 0.0021
2024-02-13 2023-12-31 13F IDEX COM 45167R104 2,653 0 0.00 576 4.36 0.0020
2023-11-14 2023-09-30 13F IDEX COM 45167R104 2,653 0 0.00 552 -3.50 0.0020
2023-08-14 2023-06-30 13F IDEX COM 45167R104 2,653 -1,825 -40.75 571 -44.78 0.0021
2023-05-15 2023-03-31 13F IDEX COM 45167R104 4,478 669 17.56 1,035 18.99 0.0040
2023-02-14 2022-12-31 13F IDEX COM 45167R104 3,809 -7 -0.18 870 14.04 0.0032
2022-11-14 2022-09-30 13F IDEX COM 45167R104 3,816 0 0.00 762 9.96 0.0032
2022-08-15 2022-06-30 13F IDEX COM 45167R104 3,816 -598 -13.55 693 -18.09 0.0028
2022-05-16 2022-03-31 13F IDEX COM 45167R104 4,414 -2,025 -31.45 846 -44.38 0.0028
2022-02-14 2021-12-31 13F IDEX COM 45167R104 6,439 -500 -7.21 1,521 5.92 0.0050
2021-11-15 2021-09-30 13F IDEX COM 45167R104 6,939 -123 -1.74 1,436 -7.53 0.0053
2021-08-16 2021-06-30 13F IDEX COM 45167R104 7,062 -277 -3.77 1,553 1.11 0.0057
2021-05-14 2021-03-31 13F IDEX COM 45167R104 7,339 38 0.52 1,536 5.64 0.0066
2021-02-16 2020-12-31 13F IDEX COM 45167R104 7,301 0 0.00 1,454 9.24 0.0070
2020-11-12 2020-09-30 13F IDEX COMMON 45167R104 7,301 0 0.00 1,331 15.44 0.0069
2020-08-14 2020-06-30 13F IDEX COMMON 45167R104 7,301 -1,350 -15.61 1,153 -3.43 0.0067
2020-05-06 2020-03-31 13F IDEX COMMON 45167R104 8,651 0 0.00 1,194 -19.70 0.0077
2020-02-13 2019-12-31 13F IDEX COMMON 45167R104 8,651 -215 -2.42 1,487 2.41 0.0075
2019-11-13 2019-09-30 13F IDEX COMMON 45167R104 8,866 0 0.00 1,452 -4.85 0.0080
2019-08-16 2019-06-30 13F IDEX COMMON 45167R104 8,866 0 0.00 1,526 13.46 0.0085
2019-04-12 2019-03-31 13F IDEX COMMON 45167R104 8,866 15 0.17 1,345 20.41 0.0078
2019-01-30 2018-12-31 13F IDEX COMMON 45167R104 8,851 -267 -2.93 1,117 -18.65 0.0070
2018-10-15 2018-09-30 13F IDEX COMMON 45167R104 9,118 0 0.00 1,373 10.37 0.0073
2018-08-01 2018-06-30 13F IDEX COMMON 45167R104 9,118 0 0.00 1,244 -4.23 0.0072
2018-04-20 2018-03-31 13F IDEX COMMON 45167R104 9,118 0 0.00 1,299 7.98 0.0074
2018-01-22 2017-12-31 13F IDEX COMMON 45167R104 9,118 0 0.00 1,203 8.67 0.0066
2017-10-25 2017-09-30 13F IDEX COMMON 45167R104 9,118 0 0.00 1,107 7.48 0.0063
2017-08-10 2017-06-30 13F/A-2 IDEX COMMON 45167R104 9,118 0 0.00 1,030 20.89 0.0060
2017-08-01 2017-06-30 13F/A-1 IDEX COMMON 45167R104 9,118 0 1,030 0.0060
2017-07-28 2017-06-30 13F IDEX COMMON 45167R104 9,118 0 1,030
2017-04-25 2017-03-31 13F/A-1 IDEX COMMON 45167R104 9,118 0 0.00 852 3.78 0.0051
2017-04-24 2017-03-31 13F IDEX COMMON 45167R104 9,118 853
2017-01-25 2016-12-31 13F IDEX COMMON 45167R104 9,118 0 0.00 821 -3.75 0.0050
2016-10-20 2016-09-30 13F IDEX COMMON 45167R104 9,118 0 0.00 853 14.04 0.0052
2016-07-14 2016-06-30 13F IDEX COMMON 45167R104 9,118 0 0.00 748 -0.93 0.0046
2016-04-22 2016-03-31 13F IDEX COMMON 45167R104 9,118 -1,125 -10.98 755 -3.70 0.0046
2016-01-20 2015-12-31 13F IDEX COMMON 45167R104 10,243 0 0.00 784 7.40 0.0048
2015-10-26 2015-09-30 13F IDEX COMMON 45167R104 10,243 0 0.00 730 -9.20 0.0047
2015-07-17 2015-06-30 13F IDEX COMMON 45167R104 10,243 0 0.00 804 3.61 0.0047
2015-04-30 2015-03-31 13F IDEX COMMON 45167R104 10,243 -5,625 -35.45 776 -37.17 0.0045
2015-01-20 2014-12-31 13F IDEX COMMON 45167R104 15,868 798 5.30 1,235 13.30 0.0070
2014-10-23 2014-09-30 13F IDEX COMMON 45167R104 15,070 0 0.00 1,090 -10.36 0.0063
2014-08-14 2014-06-30 13F/A-1 IDEX COMMON 45167R104 15,070 0 0.00 1,216 10.75 0.0077
2014-05-16 2014-03-31 13F IDEX COMMON 45167R104 15,070 0 0.00 1,098 -1.26 0.0072
2014-02-04 2013-12-31 13F IDEX COMMON 45167R104 15,070 0 0.00 1,112 13.12 0.0074
2013-10-29 2013-09-30 13F IDEX COMMON 45167R104 15,070 0 0.00 983 10.45 0.0069
2013-08-13 2013-06-30 13F IDEX COMMON 45167R104 15,070 15,070 890 0.0061
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.