Who owns DCO (DCO)
Which tracked institutional funds hold DCO, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See DCO 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.
How the tape is positioned
The tracked-fund tape on DCO is one-sided between 2025-Q4 and 2026-Q1: 94 added or opened and 23 trimmed or exited — on balance accumulating.
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
DCO’s largest tracked holder by dollar value, BlackRock, Inc., 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 DCO more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in DCO 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 223 tracked filers holding DCO, 113 increased or opened the position and 98 reduced or closed it; over the same quarter, open-market insider Form 4 buying and selling roughly offset.
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 DCO 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 16
- VANGUARD CAPITAL MANAGEMENT LLC$75M
- VANGUARD PORTFOLIO MANAGEMENT LLC$16M
- VANGUARD FIDUCIARY TRUST CO$11M
- J. Goldman & Co LP$6M
- Informed Momentum Co LLC$4M
- Universal- Beteiligungs- und Servicegesellschaft mbH$3M
Full exits 9
- VANGUARD GROUP INC$70M
- RDST Capital LLC$37M
- D. E. Shaw & Co., Inc.$2M
- Y-Intercept (Hong Kong) Ltd$1M
- TUDOR INVESTMENT CORP ET AL$1M
- TWO SIGMA ADVISERS, LP$1M
Largest adds
- BlackRock, Inc.$56M
- VICTORY CAPITAL MANAGEMENT INC$39M
- STATE STREET CORP$32M
- AMERIPRISE FINANCIAL INC$26M
- Nuveen, LLC$25M
- PARADIGM CAPITAL MANAGEMENT INC/NY$21M
Largest trims
- DIMENSIONAL FUND ADVISORS LP$9M
- ALLIANCEBERNSTEIN L.P.$6M
- ROYAL BANK OF CANADA$4M
- WELLINGTON MANAGEMENT GROUP LLP$3M
- RENAISSANCE TECHNOLOGIES LLC$3M
- Ophir Asset Management Pty Ltd$3M
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).
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| BlackRock, Inc. added | 1,769,223 | $216M | 12.5% | 2026-Q1 |
| STATE STREET CORP added | 785,541 | $96M | 5.5% | 2026-Q1 |
| PARADIGM CAPITAL MANAGEMENT INC/NY | 770,500 | $94M | 5.4% | 2026-Q1 |
| VANGUARD CAPITAL MANAGEMENT LLC new | 612,941 | $75M | 4.3% | 2026-Q1 |
| DIMENSIONAL FUND ADVISORS LP trimmed | 512,167 | $62M | 3.6% | 2026-Q1 |
| GAMCO INVESTORS, INC. ET AL trimmed | 449,461 | $55M | 3.2% | 2026-Q1 |
| BROWN ADVISORY INC trimmed | 349,286 | $43M | 2.5% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC added | 334,954 | $41M | 2.4% | 2026-Q1 |
| VICTORY CAPITAL MANAGEMENT INC added | 330,095 | $40M | 2.3% | 2026-Q1 |
| Ophir Asset Management Pty Ltd trimmed | 312,937 | $38M | 2.2% | 2026-Q1 |
| GW&K Investment Management, LLC trimmed | 312,033 | $38M | 2.2% | 2026-Q1 |
| DEUTSCHE BANK AG\ added | 302,229 | $37M | 2.1% | 2026-Q1 |
| VAN ECK ASSOCIATES CORP added | 253,987 | $31M | 1.8% | 2026-Q1 |
| LOOMIS SAYLES & CO L P trimmed | 252,529 | $31M | 1.8% | 2026-Q1 |
| Nuveen, LLC added | 249,658 | $30M | 1.8% | 2026-Q1 |
| AMERICAN CENTURY COMPANIES INC added | 225,797 | $28M | 1.6% | 2026-Q1 |
| AMERIPRISE FINANCIAL INC added | 217,471 | $27M | 1.5% | 2026-Q1 |
| Aberdeen Group plc trimmed | 204,340 | $25M | 1.4% | 2026-Q1 |
| KENNEDY CAPITAL MANAGEMENT LLC trimmed | 186,301 | $23M | 1.3% | 2026-Q1 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC trimmed | 183,639 | $22M | 1.3% | 2026-Q1 |
| ALLIANCEBERNSTEIN L.P. trimmed | 224,716 | $21M | 1.2% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC added | 162,561 | $20M | 1.1% | 2026-Q1 |
| First Eagle Investment Management, LLC trimmed | 153,776 | $19M | 1.1% | 2026-Q1 |
| FMR LLC added | 152,371 | $19M | 1.1% | 2026-Q1 |
| Invesco Ltd. added | 142,938 | $17M | 1.0% | 2026-Q1 |
| MORGAN STANLEY added | 134,431 | $16M | 0.9% | 2026-Q1 |
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 131,089 | $16M | 0.9% | 2026-Q1 |
| THORNBURG INVESTMENT MANAGEMENT INC trimmed | 130,431 | $16M | 0.9% | 2026-Q1 |
| Meros Investment Management, LP trimmed | 128,210 | $16M | 0.9% | 2026-Q1 |
| Bragg Financial Advisors, Inc added | 120,973 | $15M | 0.9% | 2026-Q1 |
| NORTHERN TRUST CORP added | 119,705 | $15M | 0.8% | 2026-Q1 |
| WCM INVESTMENT MANAGEMENT, LLC trimmed | 121,769 | $14M | 0.8% | 2026-Q1 |
| WELLS FARGO & COMPANY/MN trimmed | 113,584 | $14M | 0.8% | 2026-Q1 |
| DIAMOND HILL CAPITAL MANAGEMENT INC trimmed | 110,571 | $13M | 0.8% | 2026-Q1 |
| MILLENNIUM MANAGEMENT LLC trimmed | 108,593 | $13M | 0.8% | 2026-Q1 |
| TWO SIGMA INVESTMENTS, LP added | 101,181 | $12M | 0.7% | 2026-Q1 |
| GABELLI FUNDS LLC trimmed | 101,065 | $12M | 0.7% | 2026-Q1 |
| OBERWEIS ASSET MANAGEMENT INC/ added | 99,900 | $12M | 0.7% | 2026-Q1 |
| Phocas Financial Corp. trimmed | 89,742 | $11M | 0.6% | 2026-Q1 |
| VANGUARD FIDUCIARY TRUST CO new | 89,508 | $11M | 0.6% | 2026-Q1 |
| Mitsubishi UFJ Asset Management Co., Ltd. added | 86,264 | $11M | 0.6% | 2026-Q1 |
| ROYCE & ASSOCIATES LP trimmed | 84,581 | $10M | 0.6% | 2026-Q1 |
| Qube Research & Technologies Ltd trimmed | 66,049 | $8M | 0.5% | 2026-Q1 |
| Gibson Capital, LLC trimmed | 62,229 | $8M | 0.4% | 2026-Q1 |
| SG Americas Securities, LLC added | 60,333 | $7M | 0.4% | 2026-Q1 |
| CSM Advisors, LLC trimmed | 54,834 | $7M | 0.4% | 2026-Q1 |
| WELLINGTON MANAGEMENT GROUP LLP trimmed | 54,228 | $7M | 0.4% | 2026-Q1 |
| TEACHER RETIREMENT SYSTEM OF TEXAS trimmed | 52,021 | $6M | 0.4% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ added | 50,637 | $6M | 0.4% | 2026-Q1 |
| J. Goldman & Co LP new | 49,567 | $6M | 0.3% | 2026-Q1 |
| Advisors Asset Management, Inc. added | 49,272 | $6M | 0.3% | 2026-Q1 |
| Hennion & Walsh Asset Management, Inc. added | 49,126 | $6M | 0.3% | 2026-Q1 |
| SEI INVESTMENTS CO added | 48,840 | $6M | 0.3% | 2026-Q1 |
| JANE STREET GROUP, LLC added | 48,801 | $6M | 0.3% | 2026-Q1 |
| AQR CAPITAL MANAGEMENT LLC added | 47,505 | $6M | 0.3% | 2026-Q1 |
| RENAISSANCE TECHNOLOGIES LLC trimmed | 47,200 | $6M | 0.3% | 2026-Q1 |
| Bank of New York Mellon Corp trimmed | 45,635 | $6M | 0.3% | 2026-Q1 |
| COMMONWEALTH EQUITY SERVICES, LLC trimmed | 45,000 | $5M | 0.3% | 2026-Q1 |
| BNP PARIBAS FINANCIAL MARKETS added | 43,970 | $5M | 0.3% | 2026-Q1 |
| UBS Group AG added | 43,395 | $5M | 0.3% | 2026-Q1 |
| RAYMOND JAMES FINANCIAL INC trimmed | 41,478 | $5M | 0.3% | 2026-Q1 |
| AYAL Capital Advisors Ltd | 40,000 | $5M | 0.3% | 2026-Q1 |
| Allspring Global Investments Holdings, LLC trimmed | 39,150 | $5M | 0.3% | 2026-Q1 |
| Legal & General Group Plc added | 37,830 | $5M | 0.3% | 2026-Q1 |
| JPMORGAN CHASE & CO added | 37,715 | $4M | 0.3% | 2026-Q1 |
| MARTINGALE ASSET MANAGEMENT L P added | 35,100 | $4M | 0.2% | 2026-Q1 |
| Informed Momentum Co LLC trimmed | 34,869 | $4M | 0.2% | 2026-Q1 |
| Russell Investments Group, Ltd. added | 33,727 | $4M | 0.2% | 2026-Q1 |
| PANAGORA ASSET MANAGEMENT INC added | 32,572 | $4M | 0.2% | 2026-Q1 |
| ExodusPoint Capital Management, LP added | 32,094 | $4M | 0.2% | 2026-Q1 |
| Oliver Luxxe Assets LLC trimmed | 31,014 | $4M | 0.2% | 2026-Q1 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC added | 30,749 | $4M | 0.2% | 2026-Q1 |
| FIRST TRUST ADVISORS LP trimmed | 30,714 | $4M | 0.2% | 2026-Q1 |
| Orchard Capital Management, LLC | 28,907 | $4M | 0.2% | 2026-Q1 |
| Swiss National Bank | 27,900 | $3M | 0.2% | 2026-Q1 |
| RICE HALL JAMES & ASSOCIATES, LLC | 26,413 | $3M | 0.2% | 2026-Q1 |
| HRT FINANCIAL LP added | 26,303 | $3M | 0.2% | 2026-Q1 |
| INGALLS & SNYDER LLC trimmed | 26,034 | $3M | 0.2% | 2026-Q1 |
| Universal- Beteiligungs- und Servicegesellschaft mbH new | 25,704 | $3M | 0.2% | 2026-Q1 |
| ROYAL BANK OF CANADA trimmed | 22,256 | $3M | 0.2% | 2026-Q1 |
| MERCER GLOBAL ADVISORS INC /ADV trimmed | 22,164 | $3M | 0.2% | 2026-Q1 |
| BARCLAYS PLC trimmed | 22,050 | $3M | 0.2% | 2026-Q1 |
| ALGERT GLOBAL LLC trimmed | 21,389 | $3M | 0.2% | 2026-Q1 |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ new | 21,312 | $3M | 0.2% | 2026-Q1 |
| North Star Investment Management Corp. | 20,775 | $3M | 0.1% | 2026-Q1 |
| Annex Advisory Services, LLC trimmed | 20,486 | $2M | 0.1% | 2026-Q1 |
| G2 Investment Partners Management LLC new | 20,000 | $2M | 0.1% | 2026-Q1 |
| NEW YORK STATE COMMON RETIREMENT FUND | 19,996 | $2M | 0.1% | 2026-Q1 |
| Teton Advisors, LLC trimmed | 19,500 | $2M | 0.1% | 2026-Q1 |
| B. Metzler seel. Sohn & Co. AG | 18,772 | $2M | 0.1% | 2026-Q1 |
| RHUMBLINE ADVISERS trimmed | 18,687 | $2M | 0.1% | 2026-Q1 |
| VANGUARD GROUP INC trimmed | 737,293 | $70M | 4.1% | 2025-Q4 stale |
| RDST Capital LLC trimmed | 390,363 | $37M | 2.1% | 2025-Q4 stale |
| Teton Advisors, Inc. trimmed | 86,500 | $7M | 0.4% | 2025-Q2 stale |
| Foundry Partners, LLC trimmed | 99,330 | $6M | 0.3% | 2025-Q1 stale |
| Roubaix Capital, LLC new | 51,104 | $4M | 0.2% | 2025-Q2 stale |
| MARSHALL WACE, LLP trimmed | 39,092 | $4M | 0.2% | 2025-Q3 stale |
| AMH Equity Ltd trimmed | 30,000 | $3M | 0.2% | 2025-Q3 stale |
| Keeley-Teton Advisors, LLC added | 44,247 | $3M | 0.1% | 2025-Q1 stale |
| D. E. Shaw & Co., Inc. trimmed | 25,592 | $2M | 0.1% | 2025-Q4 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.
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.