Ticker · CUSIP 910873405
Holders (tracked)
9
Combined shares
18,094,574
Combined value
$142.22M
Last close
—
Quarter
2025Q4
Tracked holders · last 8 quarters
+2 vs previous quarter over the last 8.
SEC event timeline
9 events
- Ken Griffin (Citadel Advisors) added2026-02-17+1,073,771 shares · 2025Q413F
- D.E. Shaw & Co. opened position2026-02-17+870,260 shares · 2025Q413F
- Two Sigma Investments added2026-02-17+2,144,829 shares · 2025Q413F
- Izzy Englander (Millennium Mgmt) added2026-02-17+383,488 shares · 2025Q413F
- AQR Capital Management added2026-02-17+8,492,466 shares · 2025Q413F
- Izzy Englander (Millennium Mgmt) added2025-11-14+253,131 shares · 2025Q313F
- Two Sigma Investments added2025-11-14+3,151,936 shares · 2025Q313F
- D.E. Shaw & Co. exited2025-11-14−477,789 shares · 2025Q313F
- AQR Capital Management trimmed2025-11-14−473,632 shares · 2025Q313F
Insider activity
No insider transactions in the last 30 days.
Who moved on this name in 2025Q4
13F transactions reported for the latest quarter, grouped by direction.
New positions1
- D.E. Shaw & Co.+870,260$6.8M
Added to4
- AQR Capital Management+8,492,466$66.8M
- Two Sigma Investments+2,144,829$16.9M
- Ken Griffin (Citadel Advisors)+1,073,771$8.4M
- Izzy Englander (Millennium Mgmt)+383,488$3.0M
Trimmed0
—
Exited0
—
Institutional ownership over time
Distinct super-investors holding this ticker · combined dollar value, by quarter.
| Quarter | Holders | Combined value |
|---|---|---|
| 2022Q1 | 12 | $293.4M |
| 2022Q2 | 11 | $236.8M |
| 2022Q3 | 13 | $252K |
| 2022Q4 | 13 | $183.2M |
| 2023Q1 | 12 | $268.8M |
| 2023Q2 | 11 | $246.8M |
| 2023Q3 | 12 | $230.9M |
| 2023Q4 | 11 | $276.9M |
| 2024Q1 | 9 | $264.0M |
| 2024Q2 | 8 | $301.7M |
| 2024Q3 | 8 | $137.7M |
| 2024Q4 | 9 | $203.7M |
| 2025Q1 | 8 | $100.2M |
| 2025Q2 | 7 | $23.3M |
| 2025Q3 | 7 | $38.8M |
| 2025Q4 | 9 | $142.2M |
Who owns UMC
9 super-investors · 2025Q4
Tracked stake
18.09M
shares
Combined value
$142M
% of shares outstanding
—
shares-out unknown
Quarter action mix
New1Added8
| # | Manager | Shares | Value |
|---|---|---|---|
| 1 | AQR Capital Management | 9.46M | $74M |
| 2 | Two Sigma Investments | 5.68M | $45M |
| 3 | Ken Griffin Citadel Advisors | 1.12M | $9M |
| 4 | D.E. Shaw & Co. | 870.3K | $7M |
| 5 | Izzy Englander Millennium Mgmt | 695.4K | $5M |
| 6 | Ken Griffin Citadel Advisors | 108.0K | $849K |
| 7 | Izzy Englander Millennium Mgmt | 84.4K | $663K |
| 8 | Izzy Englander Millennium Mgmt | 37.2K | $292K |
| 9 | Ken Griffin Citadel Advisors | 35.3K | $277K |
Recent moves
20 transactions
- +383,488 · 2025Q4
- +2,144,829 · 2025Q4
- +870,260 · 2025Q4
- +1,073,771 · 2025Q4
- +8,492,466 · 2025Q4
- SOLDD.E. Shaw & Co.−477,789 · 2025Q3
- +3,151,936 · 2025Q3
- +253,131 · 2025Q3
- −473,632 · 2025Q3
- TRIMD.E. Shaw & Co.−208,459 · 2025Q2
- −7,834,768 · 2025Q2
- +9,850 · 2025Q2
- −905,816 · 2025Q2
- +452,788 · 2025Q1
- −2,040,954 · 2025Q1
- −6,435,845 · 2025Q1
- +68,495 · 2025Q1
- −7,300,362 · 2025Q1
- −1,967,384 · 2025Q1
- +617,753 · 2024Q4
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