CECO Environmental Corp.
US ˙ NasdaqGS ˙ US1251411013

SecurityCECO / CECO Environmental Corp.
InstitutionCitigroup Inc
Latest Disclosed Ownership3,458 shares
Latest Disclosed Value $ 206,027
Citigroup Inc reports 94.71% increase in ownership of CECO / CECO Environmental Corp.

On May 11, 2026 - Citigroup Inc filed a 13F-HR form disclosing ownership of 3,458 shares of CECO Environmental Corp. (US:CECO) valued at $206,028 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 1,776 shares of CECO Environmental Corp.. This represents a change in shares of 94.71% during the quarter. The current value of the position is $274,807 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)
2026-05-11 2026-03-31 13F CECO ENVIRONMENTAL COM 125141101 3,458 1,682 94.71 206 94.34 0.0001
2026-02-13 2025-12-31 13F CECO ENVIRONMENTAL COM 125141101 1,776 -29,753 -94.37 106 -93.43 0.0000
2025-11-10 2025-09-30 13F CECO ENVIRONMENTAL COM 125141101 31,529 6,935 28.20 1,614 131.90 0.0007
2025-08-11 2025-06-30 13F CECO ENVIRONMENTAL COM 125141101 24,594 -782 -3.08 696 20.42 0.0003
2025-05-12 2025-03-31 13F CECO ENVIRONMENTAL COM 125141101 25,376 -2,017 -7.36 579 -30.19 0.0003
2025-02-12 2024-12-31 13F CECO ENVIRONMENTAL COM 125141101 27,393 1,783 6.96 828 14.68 0.0005
2024-11-12 2024-09-30 13F CECO ENVIRONMENTAL COM 125141101 25,610 19,233 301.60 722 294.54 0.0004
2024-08-12 2024-06-30 13F CECO ENVIRONMENTAL COM 125141101 6,377 807 14.49 184 42.97 0.0001
2024-05-10 2024-03-31 13F CECO ENVIRONMENTAL COM 125141101 5,570 1,343 31.77 128 50.59 0.0001
2024-02-09 2023-12-31 13F CECO ENVIRONMENTAL COM 125141101 4,227 4,210 24,764.71 86 0.0001
2023-12-06 2023-09-30 13F/A-1 CECO ENVIRONMENTAL COM 125141101 17 -8,846 -99.81 0 -100.00 0.0000
2023-11-09 2023-09-30 13F CECO ENVIRONMENTAL COM 125141101 17 -8,846 0 0.0000
2023-08-10 2023-06-30 13F CECO ENVIRONMENTAL COM 125141101 8,863 -41,884 -82.53 118 -83.36 0.0001
2023-05-11 2023-03-31 13F CECO ENVIRONMENTAL COM 125141101 50,747 -425 -0.83 710 18.76 0.0005
2023-02-09 2022-12-31 13F CECO ENVIRONMENTAL COM 125141101 51,172 50,638 9,482.77 598 11,840.00 0.0005
2022-11-10 2022-09-30 13F CECO ENVIRONMENTAL COM 125141101 534 -376 -41.32 5 -16.67 0.0000
2022-08-10 2022-06-30 13F CECO ENVIRONMENTAL COM 125141101 910 -1,027 -53.02 6 -40.00 0.0000
2022-05-12 2022-03-31 13F CECO ENVIRONMENTAL COM 125141101 1,937 -6,697 -77.57 10 -81.48 0.0000
2022-02-10 2021-12-31 13F CECO ENVIRONMENTAL COM 125141101 8,634 4,469 107.30 54 86.21 0.0000
2021-11-10 2021-09-30 13F CECO ENVIRONMENTAL COM 125141101 4,165 1,116 36.60 29 31.82 0.0000
2021-08-10 2021-06-30 13F CECO ENVIRONMENTAL COM 125141101 3,049 339 12.51 22 0.00 0.0000
2021-05-13 2021-03-31 13F CECO ENVIRONMENTAL COM 125141101 2,710 -4,046 -59.89 22 -53.19 0.0000
2021-02-11 2020-12-31 13F CECO ENVIRONMENTAL COM 125141101 6,756 4,608 214.53 47 213.33 0.0000
2020-11-12 2020-09-30 13F CECO ENVIRONMENTAL COM 125141101 2,148 -2,769 -56.31 15 -53.12 0.0000
2020-08-12 2020-06-30 13F CECO ENVIRONMENTAL COM 125141101 4,917 -5,144 -51.13 32 -31.91 0.0000
2020-05-12 2020-03-31 13F CECO ENVIRONMENTAL COM 125141101 10,061 2,581 34.51 47 -17.54 0.0000
2020-02-12 2019-12-31 13F CECO ENVIRONMENTAL COM 125141101 7,480 2,088 38.72 57 54.05 0.0000
2019-11-08 2019-09-30 13F CECO ENVIRONMENTAL COM 125141101 5,392 -3,705 -40.73 37 -57.95 0.0000
2019-08-12 2019-06-30 13F CECO ENVIRONMENTAL COM 125141101 9,097 383 4.40 88 39.68 0.0001
2019-05-13 2019-03-31 13F CECO ENVIRONMENTAL COM 125141101 8,714 1,429 19.62 63 28.57 0.0001
2019-02-12 2018-12-31 13F CECO ENVIRONMENTAL COM 125141101 7,285 -2,240 -23.52 49 -33.78 0.0000
2018-11-13 2018-09-30 13F CECO ENVIRONMENTAL COM 125141101 9,525 -3,668 -27.80 74 -8.64 0.0001
2018-08-10 2018-06-30 13F CECO ENVIRONMENTAL COM 125141101 13,193 4,134 45.63 81 102.50 0.0001
2018-05-11 2018-03-31 13F CECO ENVIRONMENTAL COM 125141101 9,059 -24,067 -72.65 40 -76.47 0.0000
2018-02-12 2017-12-31 13F CECO ENVIRONMENTAL COM 125141101 33,126 18,330 123.88 170 36.00 0.0001
2017-11-13 2017-09-30 13F CECO ENVIRONMENTAL COM 125141101 14,796 7,838 112.65 125 95.31 0.0001
2017-08-11 2017-06-30 13F CECO ENVIRONMENTAL COM 125141101 6,958 -7,879 -53.10 64 -58.97 0.0001
2017-05-12 2017-03-31 13F CECO ENVIRONMENTAL COM 125141101 14,837 -25,703 -63.40 156 -72.39 0.0001
2017-02-10 2016-12-31 13F CECO ENVIRONMENTAL COM 125141101 40,540 24,292 149.51 565 207.07 0.0005
2016-11-10 2016-09-30 13F CECO ENVIRONMENTAL COM 125141101 16,248 5,982 58.27 184 104.44 0.0002
2016-08-12 2016-06-30 13F CECO ENVIRONMENTAL COM 125141101 10,266 -11,119 -51.99 90 -32.33 0.0001
2016-05-13 2016-03-31 13F CECO ENVIRONMENTAL COM 125141101 21,385 16,536 341.02 133 259.46 0.0001
2016-02-12 2015-12-31 13F CECO ENVIRONMENTAL COM 125141101 4,849 4,829 24,145.00 37 0.0000
2015-11-13 2015-09-30 13F CECO ENVIRONMENTAL COM 125141101 20 -259 -92.83 0 -100.00
2015-08-13 2015-06-30 13F CECO ENVIRONMENTAL COM 125141101 279 -1,057 -79.12 3 -78.57 0.0000
2015-05-14 2015-03-31 13F CECO ENVIRONMENTAL COM 125141101 1,336 -2,449 -64.70 14 -76.27 0.0000
2015-02-17 2014-12-31 13F CECO ENVIRONMENTAL COM 125141101 3,785 2,096 124.10 59 156.52 0.0001
2014-11-14 2014-09-30 13F CECO ENVIRONMENTAL COM 125141101 1,689 -1,100 -39.44 23 -47.73 0.0000
2014-08-14 2014-06-30 13F CECO ENVIRONMENTAL COM 125141101 2,789 -728 -20.70 44 -24.14 0.0000
2014-05-15 2014-03-31 13F CECO ENVIRONMENTAL COM 125141101 3,517 -5,972 -62.94 58 -62.34 0.0001
2014-02-14 2013-12-31 13F CECO ENVIRONMENTAL COM 125141101 9,489 -24,164 -71.80 154 -67.51 0.0001
2013-11-14 2013-09-30 13F CECO ENVIRONMENTAL COM 125141101 33,653 14,800 78.50 474 104.31 0.0004
2013-08-14 2013-06-30 13F CECO ENVIRONMENTAL COM 125141101 18,853 18,853 232 0.0002
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.