IMOS · Chipmos Technologies Inc · Holdings
Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.
Institutional Ownership Trend
Holder Concentration
Across 92 13F filersWho Holds IMOS
Last 8 quarters through Sep 30, 2026 (filing window open)Each kind of 13F filer's share of the common shares 13F filers report. Holder type comes from regulatory records, never the filer's name; style, turnover and horizon are measured from each filer's own 13F book. The quarter selector does not change this card.
Jun 30, 2026, the newest closed quarter: 91 filers, like-for-like change +17.9%; actively managed books +19.9%; index-like books +7.1%.
| Holder type | Share | Filers | Change |
|---|---|---|---|
| Registered adviser | 67.4% | 47 | +9.4% |
| Exempt adviser | 2.4% | 2 | +105.7% |
| Bank | 1.5% | 8 | +178.4% |
| Broker-dealer | 0.5% | 2 | -3.5% |
| Non-US | 0.2% | 2 | +217.6% |
| Holding company | 9.7% | 4 | +4.7% |
| Unknown | 18.3% | 26 | +57.6% |
| Style | Share | Filers | Change |
|---|---|---|---|
| Index-like | 13.7% | 8 | +7.1% |
| Systematic-like | 5.2% | 7 | +74.9% |
| Concentrated | 11.0% | 18 | +95.8% |
| Diversified active | 70.1% | 58 | +10.5% |
| Not measured | 0.0% | 0 | — |
| Unknown | 0.0% | 0 | — |
| Turnover | Share | Filers | Change |
|---|---|---|---|
| Low turnover | 34.9% | 59 | +24.6% |
| Medium turnover | 50.2% | 11 | -1.4% |
| High turnover | 13.6% | 15 | +160.9% |
| Unknown | 1.3% | 6 | +105.8% |
| Not measured | 0.0% | 0 | — |
| Holding horizon | Share | Filers | Change |
|---|---|---|---|
| Short horizon | 5.8% | 8 | +448.6% |
| Medium horizon | 10.6% | 9 | -1.6% |
| Long horizon | 79.0% | 68 | +11.7% |
| Unknown | 4.7% | 6 | +104.8% |
| Not measured | 0.0% | 0 | — |
| 13F book size | Share | Filers | Change |
|---|---|---|---|
| Under $1B | 5.2% | 13 | +336.3% |
| $1B to $10B | 7.9% | 29 | +48.9% |
| $10B to $100B | 60.5% | 26 | +7.7% |
| $100B or more | 26.4% | 23 | +19.5% |
| Not measured | 0.0% | 0 | — |
| Client base | Share | Filers | Change |
|---|---|---|---|
| Individuals and high net worth | 14.9% | 31 | +56.7% |
| Pooled investment vehicles | 42.8% | 4 | -0.5% |
| Registered funds and BDCs | 3.6% | 3 | +8.4% |
| Pension and profit sharing plans | 0.0% | 1 | +14.2% |
| Governments and sovereign funds | 1.5% | 2 | +32.3% |
| Other investment advisers | 2.8% | 3 | +5.3% |
| Other | 1.2% | 1 | -3.0% |
| Diversified | 0.4% | 2 | -31.8% |
| Unknown | 32.6% | 44 | +40.8% |
| Private funds | Share | Filers | Change |
|---|---|---|---|
| Hedge funds | 46.2% | 10 | +3.0% |
| Private equity funds | 3.9% | 6 | +21.6% |
| Venture capital funds | 0.0% | 1 | 0.0% |
| Real estate funds | 0.2% | 2 | +78.2% |
| Other private funds | 4.8% | 4 | +4.3% |
| Private funds, type not stated | 0.3% | 1 | new |
| No private funds | 14.3% | 25 | +44.1% |
| Unknown | 30.2% | 42 | +37.3% |
| Location | Share | Filers | Change |
|---|---|---|---|
| United States | 91.2% | 77 | +10.9% |
| Outside the US | 8.8% | 14 | +237.2% |
The Sep 30, 2026 filing window is still open, so its bar carries the Jun 30, 2026 positions of filers that have not filed yet.
How the mix is measured
Shares are 13F common shares restated to today's split basis; options and principal amounts are left out. The change compares only filers with a 13F in both quarters and keeps each filer in its bucket of the later quarter on both sides; a filer that continues under a new CIK is compared through its successor. Holder type comes from each filer's current regulatory profile; client base and private funds come from the Form ADV roster current at each quarter end (rosters from December 2019, so an earlier quarter reads Unknown). Style, turnover, horizon and book size are measured from each filer's 13F book in the newest measured quarter, and Not measured means none was. Actively managed books are those measured systematic-like, concentrated or diversified active.
Excluded 1 holder with no observed 2026-03-31 13F and 1 holder with no observed 2026-06-30 13F.
Conviction and Crowding
91 13F filers, quarter ended Jun 30, 2026Measured across every 13F filer's common-share book once the quarter's filing window closed. Crowding counts filers with high turnover or that advise private funds on Form ADV.
Managers in the top fifth by current three-year FundScore alpha were net buyers of $0 (0 buying, 0 selling).
Estimated Holder Cost Basis
Quarter ended Jun 30, 2026, on that quarter's share basisEstimated, never filed: each 13F buy is costed at its quarter's average traded price and each sale keeps the average cost, so this is what holders paid on average if they traded evenly through each quarter.
Estimated cost covers 37.0% of the 13F shares; positions already held when a filer's 13F history starts, or bought in a quarter without a trusted average price, have no estimate.
Shared Holders
Companies IMOS's active holders also own, quarter ended Jun 30, 2026| # | Company | Shared holders |
|---|---|---|
| 1 | JPM Jpmorgan Chase & Co | 3 |
Shareholder Targets
13F filers that own its peers but not IMOS, quarter ended Jun 30, 2026Found through its holder-overlap peers: JPM. 5,081 filers in all.
| # | Filer | In peers | Largest peers |
|---|---|---|---|
| 1 | VANGUARD CAPITAL MANAGEMENT LLC Registered adviser, Index-like | $52,891,952,908 1 held | JPM |
| 2 | STATE STREET CORP Bank, Index-like | $40,984,757,877 1 held | JPM |
| 3 | VANGUARD PORTFOLIO MANAGEMENT LLC Registered adviser, Diversified active | $21,544,697,916 1 held | JPM |
| 4 | NORGES BANK Non-US, Index-like | $11,823,921,296 1 held | JPM |
| 5 | NORTHERN TRUST CORP Bank, Index-like | $10,041,579,984 1 held | JPM |
| 6 | Capital Research Global Investors Adviser, Diversified active | $9,082,203,907 1 held | JPM |
| 7 | PRICE T ROWE ASSOCIATES INC /MD/ Registered adviser, Diversified active | $9,062,484,565 1 held | JPM |
| 8 | FMR LLC Holding company, Diversified active | $8,607,560,020 1 held | JPM |
| 9 | Bank of New York Mellon Corp Bank, Index-like | $7,084,339,018 1 held | JPM |
| 10 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC Registered adviser, Diversified active | $6,280,568,105 1 held | JPM |
Fund Ownership of IMOS by Fund Type
Registered funds' Form N-PORT reports for the quarter ended Jun 30, 2026Index funds and index ETFs hold 0.01% of shares outstanding.
| Fund type | Of shares outstanding | Shares |
|---|---|---|
| Index funds | 0.01% | 3,698 |
| Index ETFs | 0.00% | 0 |
| Active ETFs | 0.03% | 9,791 |
| Active funds | 0.24% | 84,923 |
| Unclassified | 0.01% | 3,470 |
| All registered funds | 0.29% | 101,882 |
How fund types are measured
Each fund series counts once, with its latest Form N-PORT report dated inside the quarter; only long share positions count, restated to today's split basis. The fund type is the series' latest Form N-CEN answer on or before the quarter end (the index-fund box and the exchange-traded flag), never its name. Unclassified funds have no usable N-CEN; unit investment trusts are among them, so index ownership is a floor. Funds sit inside their advisers' 13F reports, so these shares overlap the 13F figures and are never added to them.
| Holder | Value (USD) | % of 13F | Shares | Type | Filed | Open |
|---|---|---|---|---|---|---|
| Large RENAISSANCE TECHNOLOGIES LLC Registered adviser | $71,053,432 | 38.40% | 1,105,890 | Shares | 2026-08-13 | |
| Mega BlackRock, Inc. Holding company | $16,413,562 | 8.87% | 255,464 | Shares | 2026-08-07 | |
| Large ACADIAN ASSET MANAGEMENT LLC | $12,661,490 | 6.84% | 197,066 | Shares | 2026-08-13 | |
| Large O'SHAUGHNESSY ASSET MANAGEMENT, LLC Registered adviser | $11,078,306 | 5.99% | 172,425 | Shares | 2026-08-13 | |
| Small XY Capital Ltd | $8,373,445 | 4.53% | 130,326 | Shares | 2026-08-11 | |
| Mega DIMENSIONAL FUND ADVISORS LP Registered adviser | $5,698,010 | 3.08% | 88,685 | Shares | 2026-08-11 | |
| Large Vanguard Personalized Indexing Management, LLC Registered adviser | $4,655,812 | 2.52% | 72,464 | Shares | 2026-08-11 | |
| Large PEAK6 LLC Broker-dealer | $3,951,375 | 2.14% | 61,500 | Call | 2026-08-13 | |
| Mega ENVESTNET ASSET MANAGEMENT INC Registered adviser | $3,414,116 | 1.85% | 53,138 | Shares | 2026-09-23 | |
| Mega JANE STREET GROUP, LLC | $3,395,805 | 1.84% | 52,853 | Shares | 2026-08-14 | |
| Mega TWO SIGMA INVESTMENTS, LP Registered adviser | $3,264,542 | 1.76% | 50,810 | Shares | 2026-08-14 | |
| Mega Creative Planning Registered adviser | $3,172,536 | 1.71% | 49,378 | Shares | 2026-08-13 | |
| Mega MARSHALL WACE, LLP Exempt adviser | $2,211,677 | 1.20% | 34,423 | Shares | 2026-08-13 | |
| Mid RENAISSANCE GROUP LLC Registered adviser | $2,193,495 | 1.19% | 34,140 | Shares | 2026-08-13 | |
| Mega Qube Research & Technologies Ltd Exempt adviser | $2,097,184 | 1.13% | 32,641 | Shares | 2026-08-14 | |
| Mid Caprock Group, LLC | $1,985,903 | 1.07% | 30,909 | Shares | 2026-07-27 | |
| Mid Ballentine Partners, LLC Registered adviser | $1,724,919 | 0.93% | 26,847 | Shares | 2026-07-17 | |
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $1,702,625 | 0.92% | 26,500 | Put | 2026-08-14 | |
| Mega RHUMBLINE ADVISERS Registered adviser | $1,651,674 | 0.89% | 25,707 | Shares | 2026-08-12 | |
| Mega JPMORGAN CHASE & CO Bank | $1,406,239 | 0.76% | 21,887 | Shares | 2026-08-12 | |
| Mid LVW Advisors, LLC Registered adviser | $1,374,180 | 0.74% | 19,147 | Shares | 2026-10-19 | |
| Mid SIGNATUREFD, LLC Registered adviser | $1,355,735 | 0.73% | 18,890 | Shares | 2026-10-23 | |
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $1,337,299 | 0.72% | 20,814 | Shares | 2026-08-14 | |
| Mid XTX Topco Ltd | $1,270,415 | 0.69% | 19,773 | Shares | 2026-08-14 | |
| Mega CITADEL ADVISORS LLC Registered adviser | $1,133,819 | 0.61% | 17,647 | Shares | 2026-09-02 | |
| Mega JANE STREET GROUP, LLC | $1,111,525 | 0.60% | 17,300 | Call | 2026-08-14 | |
| Large Trexquant Investment LP Registered adviser | $1,056,334 | 0.57% | 16,441 | Shares | 2026-08-14 | |
| Mid Kathmere Capital Management, LLC Registered adviser | $954,612 | 0.52% | 13,301 | Shares | 2026-10-20 | |
| Mega BANK OF AMERICA CORP /DE/ Bank | $820,922 | 0.44% | 12,777 | Shares | 2026-08-14 | |
| Mega LPL Financial LLC Broker-dealer | $818,994 | 0.44% | 12,747 | Shares | 2026-08-07 | |
| Mid QUADRANT CAPITAL GROUP LLC | $805,331 | 0.44% | 11,221 | Shares | 2026-10-20 | |
| Large TD Waterhouse Canada Inc. | $588,585 | 0.32% | 8,201 | Shares | 2026-10-16 | |
| Mid RITHOLTZ WEALTH MANAGEMENT Registered adviser | $574,973 | 0.31% | 8,949 | Shares | 2026-08-11 | |
| Mega MORGAN STANLEY Holding company | $512,070 | 0.28% | 7,970 | Shares | 2026-08-13 | |
| Mega CITADEL ADVISORS LLC Registered adviser | $501,150 | 0.27% | 7,800 | Call | 2026-09-02 | |
| Large Vident Advisory, LLC Registered adviser | $489,070 | 0.26% | 7,612 | Shares | 2026-08-12 | |
| Large Mariner, LLC Registered adviser | $459,066 | 0.25% | 7,145 | Shares | 2026-08-13 | |
| Mega BNP PARIBAS ARBITRAGE, SA Non-US | $434,587 | 0.23% | 6,764 | Shares | 2026-08-13 | |
| Mid Parallel Advisors, LLC Registered adviser | $420,452 | 0.23% | 6,544 | Shares | 2026-08-05 | |
| Mid Engineers Gate Manager LP | $372,650 | 0.20% | 5,800 | Shares | 2026-08-14 | |
| Mid Foster Group, Inc. Registered adviser | $371,409 | 0.20% | 5,175 | Shares | 2026-10-13 | |
| Micro DELPHI MANAGEMENT INC /MA/ Registered adviser | $367,188 | 0.20% | 5,715 | Shares | 2026-07-31 | |
| Large LSV ASSET MANAGEMENT Registered adviser | $359,800 | 0.19% | 5,600 | Shares | 2026-08-06 | |
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $346,950 | 0.19% | 5,400 | Call | 2026-08-14 | |
| Large Connor, Clark & Lunn Investment Management Ltd. Registered adviser | $330,116 | 0.18% | 5,138 | Shares | 2026-08-13 | |
| Large Quadrature Capital Ltd | $306,858 | 0.17% | 4,776 | Shares | 2026-08-07 | |
| Large HRT FINANCIAL LP | $306,022 | 0.17% | 4,763 | Shares | 2026-08-14 | |
| Mega CITADEL ADVISORS LLC Registered adviser | $301,975 | 0.16% | 4,700 | Put | 2026-09-02 | |
| Mid GAMMA Investing LLC Registered adviser | $294,257 | 0.16% | 4,100 | Shares | 2026-10-08 | |
| Large &PARTNERS | $290,345 | 0.16% | 4,519 | Shares | 2026-08-14 | |
| Mega HSBC HOLDINGS PLC | $269,657 | 0.15% | 4,197 | Shares | 2026-08-14 | |
| Mid EVERGREEN CAPITAL MANAGEMENT LLC Registered adviser | $268,922 | 0.15% | 3,747 | Shares | 2026-10-23 | |
| Large Quantinno Capital Management LP Registered adviser | $268,822 | 0.15% | 4,184 | Shares | 2026-08-13 | |
| Mega GOLDMAN SACHS GROUP INC Holding company | $267,280 | 0.14% | 4,160 | Shares | 2026-08-14 | |
| Large Arax Advisory Partners Registered adviser | $262,268 | 0.14% | 4,082 | Shares | 2026-08-10 | |
| Mega GEODE CAPITAL MANAGEMENT, LLC Registered adviser | $237,596 | 0.13% | 3,698 | Shares | 2026-08-12 | |
| Large Squarepoint Ops LLC Registered adviser | $234,833 | 0.13% | 3,655 | Shares | 2026-08-14 | |
| Mega BANK OF MONTREAL /CAN/ Bank | $214,851 | 0.12% | 3,344 | Shares | 2026-08-12 | |
| Mid Ascent Group, LLC | $209,454 | 0.11% | 3,260 | Shares | 2026-08-03 | |
| Small Westside Investment Management, Inc. Registered adviser | $138,972 | 0.08% | 2,163 | Shares | 2026-07-27 | |
| Large Farther Finance Advisors, LLC Registered adviser | $116,913 | 0.06% | 1,629 | Shares | 2026-10-08 | |
| Mid Smartleaf Asset Management LLC Registered adviser | $113,979 | 0.06% | 1,774 | Shares | 2026-08-12 | |
| Large Allworth Financial LP | $101,129 | 0.05% | 1,574 | Shares | 2026-08-11 | |
| Large US BANCORP \DE\ Bank | $60,395 | 0.03% | 940 | Shares | 2026-08-12 | |
| Mid Global Retirement Partners, LLC | $60,009 | 0.03% | 934 | Shares | 2026-08-06 | |
| Small Bell Investment Advisors, Inc Registered adviser | $41,955 | 0.02% | 653 | Shares | 2026-08-07 | |
| Large NISA INVESTMENT ADVISORS, LLC Registered adviser | $40,621 | 0.02% | 566 | Shares | 2026-10-20 | |
| Large OSAIC HOLDINGS, INC. Holding company | $40,027 | 0.02% | 623 | Shares | 2026-08-14 | |
| Mega UBS Group AG Bank | $36,494 | 0.02% | 568 | Shares | 2026-08-13 | |
| Mega CITIGROUP INC Bank | $35,337 | 0.02% | 550 | Shares | 2026-08-03 | |
| Mid SIMPLEX TRADING, LLC | $27,499 | 0.01% | 428 | Shares | 2026-08-12 | |
| Small Physician Wealth Advisors, Inc. Registered adviser | $27,487 | 0.01% | 383 | Shares | 2026-10-20 | |
| Large NewEdge Advisors, LLC Registered adviser | $27,242 | 0.01% | 424 | Shares | 2026-08-12 | |
| Large BESSEMER GROUP INC | $17,925 | 0.01% | 279 | Shares | 2026-08-12 | |
| Large Federation des caisses Desjardins du Quebec | $16,962 | 0.01% | 264 | Shares | 2026-08-14 | |
| Large ASSETMARK, INC Registered adviser | $16,865 | 0.01% | 235 | Shares | 2026-10-21 | |
| Mid GROUP ONE TRADING LLC Broker-dealer | $15,934 | 0.01% | 248 | Shares | 2026-08-14 | |
| Small Coston, McIsaac & Partners | $13,942 | 0.01% | 217 | Shares | 2026-08-12 | |
| Mid Larson Financial Group LLC Registered adviser | $12,336 | 0.01% | 192 | Shares | 2026-08-14 | |
| Mid Crewe Advisors LLC Registered adviser | $7,260 | 0.00% | 113 | Shares | 2026-07-24 | |
| Small Cornerstone Financial Management LLC Registered adviser | $7,003 | 0.00% | 109 | Shares | 2026-08-28 | |
| Mid SBI Securities Co., Ltd. Non-US | $6,243 | 0.00% | 87 | Shares | 2026-10-22 | |
| Small ACTION POINT FINANCIAL PLANNING, LLC | $5,011 | 0.00% | 78 | Shares | 2026-08-14 | |
| Mid PRIVATE TRUST CO NA | $4,449 | 0.00% | 62 | Shares | 2026-10-20 | |
| Mid EverSource Wealth Advisors, LLC Registered adviser | $4,239 | 0.00% | 66 | Shares | 2026-07-24 | |
| Small Winch Advisory Services, LLC | $3,855 | 0.00% | 60 | Shares | 2026-08-06 | |
| Small Dogwood Wealth Management LLC | $3,276 | 0.00% | 51 | Shares | 2026-07-06 | |
| Mid HANTZ FINANCIAL SERVICES, INC. Registered adviser | $3,212 | 0.00% | 50 | Shares | 2026-08-13 | |
| Small Moisand Fitzgerald Tamayo, LLC Registered adviser | $2,799 | 0.00% | 39 | Shares | 2026-10-15 | |
| Small Silver Grove Financial Group, Inc. Registered adviser | $1,927 | 0.00% | 30 | Shares | 2026-08-13 | |
| Mega ROYAL BANK OF CANADA Bank | $1,349 | 0.00% | 21 | Shares | 2026-08-14 | |
| Mid Parkside Financial Bank & Trust | $789 | 0.00% | 11 | Shares | 2026-10-27 | |
| Mid Root Financial Partners, LLC Registered adviser | $143 | 0.00% | 2 | Shares | 2026-10-21 | |
| Mega WELLS FARGO & COMPANY/MN Bank | $64 | 0.00% | 1 | Shares | 2026-08-14 | |
| Small Caitong International Asset Management Co., Ltd | $64 | 0.00% | 1 | Shares | 2026-08-05 |