Goldman holds 5.76% of Siltronic's votes and 0.17% of its stock
A German filing puts Goldman Sachs at 5.76% of Siltronic's voting rights, with 57,066 actual shares behind it; the rest is a lending book. The same week, long-time holder Wacker Chemie banked €171m selling into the AI rally.
Vincent Jiang · 2 min read
A 5.76% flag over 57,066 shares
Siltronic's share register picked up a big number this week and almost no stock behind it. The WpHG notice of 1 October puts Goldman Sachs Group at 5.76% of the wafer maker's 33,000,000 voting rights, up from 5.29%, with the threshold crossed on 25 September 1.
Shares actually held: 57,066, or 0.17% 1. The other 5.58 points are instruments: a 2.33% right to recall, a 2.00% right of use, an exchangeable bond due January 2029 and a cash swap running to 2036 1.
Recall and use rights are the signature of a securities-lending desk: stock parked with borrowers and short sellers. The third-largest name on Siltronic's register is not an owner; it is a lending book with a flag on it. Goldman's own share line halved in the same filing, from 0.38% to 0.17%, while the instrument book grew 1.
Goldman's 5.76% of Siltronic: 0.17 points are stock, 5.58 are lending and derivatives
- Right to recall2.33%40.4%
- Right of use2%34.8%
- Exchangeable bond (2029)0.89%15.5%
- Cash swap (2036)0.35%6.1%
- Shares held0.17%3%
- Call warrant (2030)0.01%0.2%
Data
| Slice | Value | Share |
|---|---|---|
| Right to recall | 2.33% | 40.4% |
| Right of use | 2% | 34.8% |
| Exchangeable bond (2029) | 0.89% | 15.5% |
| Cash swap (2036) | 0.35% | 6.1% |
| Shares held | 0.17% | 3% |
| Call warrant (2030) | 0.01% | 0.2% |
Wacker banked €171m into the shortage story
The timing does the explaining. Wacker Chemie, the former parent, placed 2.2 million shares overnight on 22 September, 6.7% of the company, after an €82.75 Xetra close 2. The block priced at €77.25, a 6.6% discount, for roughly €171m gross 3. The sale cut Wacker from 21.67% to just under 15% and likely leaves HAL Trust, previously at 15.1%, the largest holder 23.
It was the second block of the year, after 2.1 million shares at €89.35 in May 4. None of the €171m reached Siltronic, whatever the "Siltronic raises €170M after a 54% rally" headline suggests 5. Dealroom's note dates and baselines the rally nowhere 5.
Priced for 2028, guided for 2026
The bull case is UBS's shortage model: 300mm wafer utilization around 84% now, above 90% in 2027, full in 2028, demand unmet by 2029 6. The company's own numbers sit earlier in the cycle. Siltronic still guides 2026 revenue down by a low-to-mid single-digit percentage after July's upgrade 7. A 30 September analysis counts low current 300mm utilization, losses stretching into 2028, swollen power-segment inventories and price pressure outside long-term contracts 8.
UBS's shortage model has Siltronic's 300mm lines full by 2028
- 300mm wafer utilization
- Estimate
Data
| 300mm wafer utilization | |
|---|---|
| 2026 (estimate) | 84% |
| 2027 (estimate) | 90% |
| 2028 (estimate) | 100% |
That gap sets the rule. The shortage case pays in 2028 and 2029, past the loss years Siltronic itself forecasts 8, so it is a 2029 horizon or it is noise. And the borrow is the other side of the register: 4.33 points of recallable lending lines are the squeeze fuel for anyone short if Goldman calls the stock back 1. Watch whether HAL adds, and whether Wacker's last 15% comes back to market before 2028 does 3.
Deepdive
AI-generated from this story and its cited sources. Not investment advice.
