Security Snapshot

CECO ENVIRONMENTAL CORP - COMMON STOCK (CECO) Institutional Ownership

CUSIP: 125141101

13F Institutional Holders and Ownership History from Q1 2014 to Q3 2026

13F reference period

Q2 2026

Institutions Reporting

343

Shares (Excl. Options)

51.59MFull value: 51,593,367 · shares · 30 Jun 2026

Price

$90.74

The headline uses the Q2 2026 reference period after its reporting deadline. Available reports may still be incomplete or amended. Newer periods in the history table contain incoming reports and may be incomplete.

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Security type / class
Equity / COMMON STOCK
Symbol
CECO on TXSE
All holders as of 30 Jun 2026
Q2 2026
Total 13F shares
51,593,367
Latest holder snapshot 5 signals
Total 13F value
$4,679,550,077
Portfolio coverage rank
0.01%
Share change
+20,051,879
Value change
+$1,836,355,241
Number of holders
343
Issuer context Names, identifiers, and filing context for this profile. 3 identity fields
Shares outstanding
58,214,946
SEC-reported price per share
$69.64
Insider filing price
$69.64
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Filing notes and source

Key facts

  • CECO - CECO ENVIRONMENTAL CORP - COMMON STOCK is tracked under CUSIP 125141101.
  • 343 institutions reported positions in Q2 2026.
  • 9 significant owners is listed from Schedule 13D/13G reporting.

Change

  • Holder count moved from 264 to 343 between Q1 2026 and Q2 2026.
  • SEC-reported value moved from
    $1.88BFull value: $1,876,809,137 · USD · 31 Mar 2026
    to
    $4.68BFull value: $4,679,550,077 · USD · 30 Jun 2026
    .

Research use

  • You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
  • 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.

Evidence

Source: SEC Form 13F

Latest holder context comes from 343 institutions filings for Q2 2026.

Open SEC evidence

Security key

125141101

13F reference period

Q2 2026

13F holders

343

13D/G owners

9

CIK / CUSIP context first

Open Q2 2026 holders CECO full holder history CECO ENVIRONMENTAL CORP SEC filings CECO ENVIRONMENTAL CORP company facts CECO ENVIRONMENTAL CORP insider transactions

Broader feeds

Latest 13F filings Latest 13D/G filings All securities

13D/G owners

Significant owners

Large-stake holder rows connected to Schedule 13D/G evidence.

Rows
9
Security
CECO
Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
FMR LLC 7.7% +25% $381,500,640 +$198,135,726 4,524,438 +108% FMR LLC 30 Jun 2026
DEZWIREK JASON 12% $259,443,260 4,198,111 Jason DeZwirek 23 Feb 2026
BlackRock, Inc. 6.3% $62,892,553 2,221,551 BlackRock, Inc. 30 Jun 2025
T. Rowe Price Investment Management, Inc. 3.7% -38% $181,621,317 +$1,864,147 2,153,953 +1% T. Rowe Price Investment Management, Inc. 30 Jun 2026
AMERICAN CENTURY INVESTMENT MANAGEMENT INC 3.6% -35% $176,095,659 +$4,225,191 2,088,421 +2.5% American Century Investment Management, Inc. 30 Jun 2026
VANGUARD GROUP INC 5% -0.4% $106,568,849 +$588,925 1,780,596 +0.56% The Vanguard Group 31 Dec 2025
Capital International Investors 4.7% $85,777,971 1,675,351 Capital International Investors 30 Sep 2025
DIMENSIONAL FUND ADVISORS LP 3.6% $24,340,540 1,254,667 Dimensional Fund Advisors LP 31 Mar 2025
Hood River Capital Management LLC 1.4% -69% $25,209,549 -$73,487,053 492,374 -74% Hood River Capital Management LLC 30 Sep 2025
As of 30 Jun 2026, 343 institutional investors reported holding
51.59MFull value: 51,593,367 · shares · 30 Jun 2026
shares of CECO ENVIRONMENTAL CORP - COMMON STOCK (CECO). This represents 89% of the company’s total
58.21MFull value: 58,214,946 · shares · Stored outstanding share count
outstanding shares.

13F concentration

Top 25 institutional shareholders

Largest 13F positions for this security by reported shares and value.

Top holder share
60%
Institution Ownership % Shares Held Share Change % Portfolio % Holdings Value
FMR LLC 7.8% 4,524,438 +94% 0.02% $410,547,534
BlackRock, Inc. 7.4% 4,323,986 +89% 0.01% $392,358,496
VANGUARD CAPITAL MANAGEMENT LLC 4% 2,339,252 +76% 0% $212,263,727
DIMENSIONAL FUND ADVISORS LP 3.8% 2,185,315 +142% 0.04% $198,294,132
T. Rowe Price Investment Management, Inc. 3.7% 2,153,953 +1% 0.13% $195,450,000
AMERICAN CENTURY COMPANIES INC 3.6% 2,088,421 +10% 0.08% $189,503,480
Driehaus Capital Management LLC 2.7% 1,560,486 +144% 0.82% $141,598,500
GEODE CAPITAL MANAGEMENT, LLC 2.5% 1,460,389 +71% 0.01% $132,541,360
Divisadero Street Capital Management, LP 2.3% 1,329,817 +609% 2.8% $120,667,595
STATE STREET CORP 2.2% 1,264,690 +92% 0% $114,757,971
Capital World Investors 2% 1,157,200 +9.7% 0.01% $105,004,328
TWO SIGMA INVESTMENTS, LP 1.7% 1,013,412 +5.6% 0.07% $91,957,005
NEEDHAM INVESTMENT MANAGEMENT LLC 1.6% 957,500 +147% 2.6% $86,883,550
Jupiter Topco LLC 1.6% 949,904 0% 0.04% $86,193,945
ROYCE & ASSOCIATES LP 1.4% 842,317 +1.8% 0.62% $76,431,845
PRICE T ROWE ASSOCIATES INC /MD/ 1.4% 835,692 +3811% 0.01% $75,831,000
EMERALD ADVISERS, LLC 1.3% 736,784 +41% 1.6% $66,855,780
KING LUTHER CAPITAL MANAGEMENT CORP 1.2% 716,925 -4.4% 0.27% $65,053,775
Invesco Ltd. 1.1% 667,929 +1707% 0% $60,607,877
LORD, ABBETT & CO. LLC 1.1% 642,111 +55% 0.17% $58,265,000
IES Holdings, Inc. 1.1% 623,527 +9.7% 18% $56,578,840
Thrivent Financial for Lutherans 1% 607,981 -5% 0.09% $55,167,000
GW&K Investment Management, LLC 1% 601,544 0.43% $54,584,000
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 0.98% 568,484 +393% 0.02% $51,584,238
NORTHERN TRUST CORP 0.85% 492,491 +96% 0.01% $44,688,634

Quarter history

Institutional holders across reporting periods

Holder count, reported shares/value, and median price by quarter.

Periods
51
Headline period
Q2 2026
Rows shown
1-25 of 51
Period 13F Shares, Excl. Options Value, Excl. Options Value Change Price (Median) Investors
2026 Q3 1,309,158 $91,050,700 +$7,626,150 $69.64 58
2026 Q2 51,593,367 $4,679,550,077 +$1,836,355,241 $90.74 343
2026 Q1 31,502,079 $1,876,809,137 +$118,124,705 $59.58 264
2025 Q4 29,469,400 $1,763,812,534 +$30,892,900 $59.85 231
2025 Q3 28,689,275 $1,469,014,088 -$41,963,988 $51.20 223
2025 Q2 29,533,109 $836,112,974 +$32,129,162 $28.31 176
2025 Q1 29,019,049 $661,701,183 +$4,040,198 $22.80 168
2024 Q4 28,700,286 $867,879,540 +$61,207,759 $30.23 173
2024 Q3 26,597,751 $748,827,118 +$20,787,924 $28.20 172
2024 Q2 25,805,618 $744,389,725 +$64,814,074 $28.85 174
2024 Q1 23,844,042 $548,828,086 -$2,894,856 $23.02 172
2023 Q4 23,945,610 $485,587,280 +$5,745,839 $20.28 156
2023 Q3 23,870,895 $381,219,817 +$1,153,785 $15.97 144
2023 Q2 23,867,510 $318,872,994 +$23,565,379 $13.36 144
2023 Q1 22,038,767 $308,225,395 +$9,650,782 $13.99 140
2022 Q4 21,930,886 $256,185,071 -$3,514,029 $11.68 120
2022 Q3 22,264,368 $197,061,917 +$3,974,759 $8.85 111
2022 Q2 21,886,720 $130,891,482 -$9,420,577 $5.98 92
2022 Q1 23,534,851 $129,146,699 +$2,851,678 $5.49 87
2021 Q4 23,011,348 $143,328,071 -$1,064,143 $6.23 81
2021 Q3 23,120,707 $162,723,601 -$6,697,183 $7.04 79
2021 Q2 24,056,678 $172,146,826 -$1,215,290 $7.16 88
2021 Q1 24,222,794 $192,078,841 -$3,325,268 $7.93 92
2020 Q4 24,713,594 $171,999,450 -$2,243,272 $6.96 82
2020 Q3 24,999,442 $182,224,725 +$75,853 $7.29 86
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