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Institutional Ownership · SEC Form 13F

Who owns CECO (CECO)


Which tracked institutional funds hold CECO, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See CECO company fundamentals →

Ownership as of the 2026-Q1 13F filings. 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.

261
Institutional holders
31,418,607
Shares held (tracked funds)
88.1%
Of shares outstanding

How the tape is positioned

68 tracked funds added or opened CECO while 57 trimmed or exited it between 2025-Q4 and 2026-Q1 — the tape is split. When large holders disagree on a name, the funds moving first are sometimes ahead of the story.

A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.

Conviction spread

CECO’s largest tracked holder by dollar value, FMR LLC, sizes it at 0.0% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.0pp gap the other way — the median holder sizes CECO more heavily than its largest holder by dollar value does.

Book-share is each fund’s reported value in CECO divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.

Institutional & insider positioning

Between 2025-Q4 and 2026-Q1, across 261 tracked filers holding CECO, 149 increased or opened the position and 108 reduced or closed it; over the same quarter, there were no open-market insider Form 4s.

This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.

New buyers & exits

Funds opening or closing a position in CECO between the 2025-Q4 and 2026-Q1 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.

New buyers 27

  • VANGUARD CAPITAL MANAGEMENT LLC$79M
  • Rockefeller Capital Management L.P.$15M
  • VANGUARD PORTFOLIO MANAGEMENT LLC$14M
  • FARALLON CAPITAL MANAGEMENT LLC$14M
  • VANGUARD FIDUCIARY TRUST CO$12M
  • Divisadero Street Capital Management, LP$11M

Full exits 19

  • VANGUARD GROUP INC$92M
  • Capital International Investors$43M
  • WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC$42M
  • WELLINGTON MANAGEMENT GROUP LLP$36M
  • TWO SIGMA ADVISERS, LP$15M
  • CASTLEARK MANAGEMENT LLC$9M

Largest adds

  • T. Rowe Price Investment Management, Inc.$126M
  • Capital World Investors$43M
  • TWO SIGMA INVESTMENTS, LP$26M
  • IES Holdings, Inc.$17M
  • MARSHALL WACE, LLP$15M
  • BESSEMER GROUP INC$13M

Largest trims

  • KING LUTHER CAPITAL MANAGEMENT CORP$12M
  • AMERICAN CENTURY COMPANIES INC$9M
  • Nuveen, LLC$8M
  • First Eagle Investment Management, LLC$8M
  • FRANKLIN RESOURCES INC$6M
  • LOOMIS SAYLES & CO L P$6M

Institutional holders

One row per tracked fund, largest reported value first. “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding. Rows marked stale are from an earlier filing than the security’s latest quarter — that fund is absent from the newest snapshot (position exited, or reported under a different name).

FundSharesReported value% of valueQuarter
FMR LLC added2,287,678$136M6.5%2026-Q1
BlackRock, Inc. trimmed2,285,277$136M6.5%2026-Q1
T. Rowe Price Investment Management, Inc. added2,131,845$127M6.1%2026-Q1
AMERICAN CENTURY COMPANIES INC trimmed1,894,177$113M5.4%2026-Q1
VANGUARD CAPITAL MANAGEMENT LLC new1,332,469$79M3.8%2026-Q1
Capital World Investors added1,055,080$63M3.0%2026-Q1
TWO SIGMA INVESTMENTS, LP added959,698$57M2.7%2026-Q1
DIMENSIONAL FUND ADVISORS LP added903,291$54M2.6%2026-Q1
JANUS HENDERSON GROUP PLC trimmed894,782$53M2.5%2026-Q1
GEODE CAPITAL MANAGEMENT, LLC added856,133$51M2.4%2026-Q1
ROYCE & ASSOCIATES LP added827,781$49M2.4%2026-Q1
KING LUTHER CAPITAL MANAGEMENT CORP trimmed750,083$45M2.1%2026-Q1
STATE STREET CORP added657,349$39M1.9%2026-Q1
Thrivent Financial for Lutherans trimmed640,006$38M1.8%2026-Q1
Driehaus Capital Management LLC added639,892$38M1.8%2026-Q1
IES Holdings, Inc. added568,527$34M1.6%2026-Q1
EMERALD ADVISERS, LLC added523,017$31M1.5%2026-Q1
LORD, ABBETT & CO. LLC added414,400$25M1.2%2026-Q1
Legal & General Group Plc trimmed400,472$24M1.1%2026-Q1
NEEDHAM INVESTMENT MANAGEMENT LLC added387,500$23M1.1%2026-Q1
MORGAN STANLEY added350,740$21M1.0%2026-Q1
EMERALD MUTUAL FUND ADVISERS TRUST added314,005$19M0.9%2026-Q1
Rockefeller Capital Management L.P. added254,321$15M0.7%2026-Q1
MARSHALL WACE, LLP added251,904$15M0.7%2026-Q1
NORTHERN TRUST CORP added251,874$15M0.7%2026-Q1
MARTIN & CO INC /TN/ added249,462$15M0.7%2026-Q1
CHARLES SCHWAB INVESTMENT MANAGEMENT INC trimmed247,499$15M0.7%2026-Q1
First Eagle Investment Management, LLC trimmed242,511$14M0.7%2026-Q1
VANGUARD PORTFOLIO MANAGEMENT LLC new237,837$14M0.7%2026-Q1
FARALLON CAPITAL MANAGEMENT LLC new234,000$14M0.7%2026-Q1
LOOMIS SAYLES & CO L P trimmed229,014$14M0.7%2026-Q1
DEUTSCHE BANK AG\ added227,787$14M0.6%2026-Q1
OSTERWEIS CAPITAL MANAGEMENT INC added226,617$14M0.6%2026-Q1
CITADEL ADVISORS LLC added217,386$13M0.6%2026-Q1
BESSEMER GROUP INC added216,494$13M0.6%2026-Q1
VANGUARD FIDUCIARY TRUST CO new209,692$12M0.6%2026-Q1
UBS Group AG trimmed201,107$12M0.6%2026-Q1
Robeco Schweiz AG added198,743$12M0.6%2026-Q1
BNP PARIBAS FINANCIAL MARKETS added191,494$11M0.5%2026-Q1
Divisadero Street Capital Management, LP added187,600$11M0.5%2026-Q1
SEGALL BRYANT & HAMILL, LLC trimmed175,054$10M0.5%2026-Q1
Amundi trimmed168,199$10M0.5%2026-Q1
Squarepoint Ops LLC added165,266$10M0.5%2026-Q1
Point72 Asset Management, L.P. added159,079$9M0.5%2026-Q1
ESSEX INVESTMENT MANAGEMENT CO LLC added157,246$9M0.4%2026-Q1
FIRST TRUST ADVISORS LP added156,563$9M0.4%2026-Q1
PEREGRINE CAPITAL MANAGEMENT LLC trimmed154,307$9M0.4%2026-Q1
Pier Capital, LLC added150,245$9M0.4%2026-Q1
KENNEDY CAPITAL MANAGEMENT LLC added149,778$9M0.4%2026-Q1
FRANKLIN RESOURCES INC trimmed147,465$9M0.4%2026-Q1
Allspring Global Investments Holdings, LLC trimmed146,701$9M0.4%2026-Q1
POLEN CAPITAL MANAGEMENT LLC added143,231$9M0.4%2026-Q1
OBERWEIS ASSET MANAGEMENT INC/ trimmed135,032$8M0.4%2026-Q1
VOLORIDGE INVESTMENT MANAGEMENT, LLC added134,370$8M0.4%2026-Q1
SILVERCREST ASSET MANAGEMENT GROUP LLC trimmed131,652$8M0.4%2026-Q1
GOLDMAN SACHS GROUP INC added126,512$8M0.4%2026-Q1
Nuveen, LLC trimmed121,866$7M0.3%2026-Q1
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP added115,242$7M0.3%2026-Q1
Russell Investments Group, Ltd. added114,482$7M0.3%2026-Q1
SEI INVESTMENTS CO added111,313$7M0.3%2026-Q1
MARATHON CAPITAL MANAGEMENT trimmed98,330$6M0.3%2026-Q1
Granahan Investment Management, LLC trimmed92,728$6M0.3%2026-Q1
AQR CAPITAL MANAGEMENT LLC added91,860$5M0.3%2026-Q1
GREAT LAKES ADVISORS, LLC trimmed91,071$5M0.3%2026-Q1
Bank of New York Mellon Corp trimmed86,405$5M0.2%2026-Q1
SG Americas Securities, LLC trimmed78,143$5M0.2%2026-Q1
BANK OF AMERICA CORP /DE/ trimmed76,339$5M0.2%2026-Q1
Peregrine Asset Advisers, Inc. trimmed73,886$4M0.2%2026-Q1
Panoramic Capital, LLC added66,566$4M0.2%2026-Q1
4D Advisors, LLC new65,000$4M0.2%2026-Q1
FORMULA GROWTH LTD trimmed62,344$4M0.2%2026-Q1
Legato Capital Management LLC trimmed60,626$4M0.2%2026-Q1
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC trimmed60,310$4M0.2%2026-Q1
Swiss National Bank added59,900$4M0.2%2026-Q1
Calamos Advisors LLC added58,053$3M0.2%2026-Q1
Moran Wealth Management, LLC added56,953$3M0.2%2026-Q1
WHITE PINE CAPITAL LLC trimmed56,707$3M0.2%2026-Q1
TIG Advisors, LLC new54,234$3M0.2%2026-Q1
Aquatic Capital Management LLC added52,731$3M0.2%2026-Q1
TD Asset Management Inc added52,724$3M0.2%2026-Q1
NOMURA ASSET MANAGEMENT INTERNATIONAL INC. trimmed50,520$3M0.1%2026-Q1
1060 Capital, LLC new50,000$3M0.1%2026-Q1
North Star Investment Management Corp. added48,150$3M0.1%2026-Q1
CREDIT AGRICOLE S A47,936$3M0.1%2026-Q1
VANGUARD GROUP INC trimmed1,531,408$92M4.4%2025-Q4 stale
Capital International Investors trimmed721,982$43M2.1%2025-Q4 stale
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC added706,273$42M2.0%2025-Q4 stale
WELLINGTON MANAGEMENT GROUP LLP trimmed607,417$36M1.7%2025-Q4 stale
ACK Asset Management LLC trimmed1,201,000$27M1.3%2025-Q1 stale
Hood River Capital Management LLC trimmed492,374$25M1.2%2025-Q3 stale
TWO SIGMA ADVISERS, LP added247,342$15M0.7%2025-Q4 stale
CASTLEARK MANAGEMENT LLC added156,505$9M0.4%2025-Q4 stale
Advantage Alpha Capital Partners LP trimmed113,645$6M0.3%2025-Q3 stale
JANE STREET GROUP, LLC trimmed88,820$5M0.3%2025-Q4 stale
CSM Advisors, LLC new185,435$5M0.3%2025-Q2 stale
Informed Momentum Co LLC trimmed85,139$5M0.2%2025-Q4 stale
VAN ECK ASSOCIATES CORP trimmed83,596$4M0.2%2025-Q3 stale
THAMES CAPITAL MANAGEMENT LLC69,403$4M0.2%2025-Q4 stale
Foundry Partners, LLC added172,670$4M0.2%2025-Q1 stale
MACQUARIE GROUP LTD trimmed66,134$3M0.2%2025-Q3 stale

Ownership over time

Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.

HoldersTotal shares

Reading this table

Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.

About 13F filings

A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.

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