CHIPMOS TECHNOLOGIES INC-ADR (IMOS) Top Institutional Shareholders
CHIPMOS TECHNOLOGIES INC-ADR (IMOS) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended March 31, 2026. The institutional investors covered on this page collectively reported approximately $74.45M in IMOS holdings during the latest filing period.
Renaissance Technologies LLC is currently the largest disclosed institutional shareholder of IMOS tracked by InsiderSet, reporting ownership valued at approximately $40.00M in its March 31, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $65.96M, representing an estimated gain of +64.90% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 87% of the total disclosed IMOS value among the investors covered in this analysis. Major shareholders include Renaissance Technologies LLC, Blackrock, Inc., Dimensional Fund Advisors Lp, and several other long-term asset managers with concentrated positions in CHIPMOS TECHNOLOGIES INC-ADR (IMOS).
This page ranks the largest institutional IMOS shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
71
Total Reported Value
$74.45M
Largest Holder
Renaissance Technologies LLC
Largest Position
$40.00M
Insider Transactions (90d)
0
Latest Filing Quarter
Q1 2026
New Institutional Positions
77
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Renaissance Technologies LLC | Jim Simons | 0.06% | 1,117,990 | $40,001,682 | $65,961,410 | +$25,959,728 | +64.90% |
| Blackrock, Inc. | 0.00% | 254,326 | $9,099,784 | $15,005,234 | +$5,905,450 | +64.90% | |
| Dimensional Fund Advisors Lp | 0.00% | 92,254 | $3,300,720 | $5,442,986 | +$2,142,266 | +64.90% | |
| O'Shaughnessy Asset Management, Llc | 0.01% | 79,723 | $2,852,489 | $4,703,657 | +$1,851,168 | +64.90% | |
| Vanguard Personalized Indexing Management, Llc | 0.02% | 68,710 | $2,458,444 | $4,053,890 | +$1,595,446 | +64.90% | |
| Envestnet Asset Management Inc | 0.00% | 54,739 | $1,958,558 | $3,229,601 | +$1,271,043 | +64.90% | |
| Creative Planning | 0.00% | 44,829 | $1,603,982 | $2,644,911 | +$1,040,929 | +64.90% | |
| Renaissance Group Llc | 0.05% | 35,180 | $1,258,740 | $2,075,620 | +$816,880 | +64.90% | |
| Marshall Wace, Llp | 0.00% | 32,603 | $1,166,537 | $1,923,577 | +$757,040 | +64.90% | |
| Two Sigma Investments, Lp | 0.00% | 30,221 | $1,081,307 | $1,783,039 | +$701,732 | +64.90% | |
| Citadel Advisors Llc | 0.00% | 24,862 | $889,562 | $1,466,858 | +$577,296 | +64.90% | |
| Rhumbline Advisers | 0.00% | 24,393 | $872,779 | $1,439,187 | +$566,408 | +64.90% | |
| Ballentine Partners, Llc | 0.01% | 22,876 | $818,503 | $1,349,684 | +$531,181 | +64.90% | |
| Parvin Asset Management, Llc | 0.57% | 21,770 | $778,931 | $1,284,430 | +$505,499 | +64.90% | |
| Signaturefd, Llc | 0.01% | 20,897 | $747,695 | $1,232,923 | +$485,228 | +64.90% | |
| Quadrature Capital Ltd | 0.01% | 19,933 | $713,203 | $1,176,047 | +$462,844 | +64.90% | |
| Caprock Group, Llc | 0.01% | 16,397 | $586,685 | $967,423 | +$380,738 | +64.90% | |
| Lpl Financial Llc | 0.00% | 13,469 | $481,921 | $794,671 | +$312,750 | +64.90% | |
| Bank Of America Corp | 0.00% | 12,922 | $462,349 | $762,398 | +$300,049 | +64.90% | |
| Millennium Management Llc | 0.00% | 10,729 | $383,884 | $633,011 | +$249,127 | +64.90% | |
| Connor, Clark & Lunn Investment Management Ltd. | 0.00% | 10,134 | $362,595 | $597,906 | +$235,311 | +64.90% | |
| Lvw Advisors, Llc | 0.03% | 9,488 | $339,481 | $559,792 | +$220,311 | +64.90% | |
| Jane Street Group, Llc | 0.00% | 9,113 | $326,063 | $537,667 | +$211,604 | +64.90% | |
| Xtx Topco Ltd | 0.01% | 8,666 | $310,069 | $511,294 | +$201,225 | +64.90% | |
| Trexquant Investment Lp | 0.00% | 7,466 | $267,133 | $440,494 | +$173,361 | +64.90% | |
| Parallel Advisors, Llc | 0.00% | 6,342 | $226,917 | $374,178 | +$147,261 | +64.90% | |
| Kathmere Capital Management, Llc | 0.01% | 5,690 | $203,588 | $335,710 | +$132,122 | +64.90% | |
| Gamma Investing Llc | 0.01% | 3,240 | $115,927 | $191,160 | +$75,233 | +64.90% | |
| Allworth Financial Lp | 0.00% | 2,294 | $82,080 | $135,346 | +$53,266 | +64.90% | |
| Westside Investment Management, Inc. | 0.01% | 2,163 | $79,403 | $127,617 | +$48,214 | +60.72% | |
| Arax Advisory Partners | 0.00% | 2,151 | $76,963 | $126,909 | +$49,946 | +64.90% | |
| Bnp Paribas Financial Markets | 0.00% | 2,140 | $76,569 | $126,260 | +$49,691 | +64.90% | |
| Smartleaf Asset Management Llc | 0.00% | 1,774 | $62,504 | $104,666 | +$42,162 | +67.45% | |
| Farther Finance Advisors, Llc | 0.00% | 1,577 | $56,614 | $93,043 | +$36,429 | +64.35% | |
| Quadrant Capital Group Llc | 0.04% | 13,589 | $48,966 | $801,751 | +$752,785 | +1537.36% | |
| Morgan Stanley | 0.00% | 1,353 | $48,420 | $79,827 | +$31,407 | +64.86% | |
| Us Bancorp \De\ | 0.00% | 781 | $27,944 | $46,079 | +$18,135 | +64.90% | |
| Jnba Financial Advisors | 0.00% | 750 | $26,835 | $44,250 | +$17,415 | +64.90% | |
| Bell Investment Advisors, Inc | 0.00% | 653 | $23,365 | $38,527 | +$15,162 | +64.89% | |
| Royal Bank Of Canada | 0.00% | 616 | $22,000 | $36,344 | +$14,344 | +65.20% | |
| Assetmark, Inc | 0.00% | 550 | $19,679 | $32,450 | +$12,771 | +64.90% | |
| Physician Wealth Advisors, Inc. | 0.00% | 490 | $17,533 | $28,910 | +$11,377 | +64.89% | |
| Nisa Investment Advisors, Llc | 0.00% | 457 | $16,351 | $26,963 | +$10,612 | +64.90% | |
| Osaic Holdings, Inc. | 0.00% | 438 | $15,672 | $25,842 | +$10,170 | +64.89% | |
| Federation Des Caisses Desjardins Du Quebec | 0.00% | 264 | $9,470 | $15,576 | +$6,106 | +64.48% | |
| Eversource Wealth Advisors, Llc | 0.00% | 311 | $8,976 | $18,349 | +$9,373 | +104.42% | |
| Acadian Asset Management Llc | 0.01% | 225,521 | $8,056 | $13,305,739 | +$13,297,683 | +165065.58% | |
| Cwm, Llc | 0.00% | 220 | $7,872 | $12,980 | +$5,108 | +64.89% | |
| Larson Financial Group Llc | 0.00% | 192 | $6,870 | $11,328 | +$4,458 | +64.89% | |
| Intentional Wealth Strategies, Llc | 0.01% | 158 | $5,653 | $9,322 | +$3,669 | +64.90% |
Frequently asked questions about IMOS
Who owns the most IMOS stock?
The largest holders of IMOS are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for CHIPMOS TECHNOLOGIES INC-ADR (IMOS).
Is IMOS widely held by superinvestors?
Many widely followed stocks like IMOS appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly IMOS is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.