
Siemens AG is a publicly traded company on XNYS, led by Robert Ball, with a market cap of $296.0M. As of Q3 2025, 36% of shares are held by 42 institutional investors, with FMR LLC as the largest holder at 18.9%.
Overview of institutional ownership in SI as of Q3 2025 with a market cap of $255.5M
Based on market cap of $255.5M as of Q3 2025. Institutional (non-HF) excludes hedge funds to avoid double counting.
Institutions with the largest positions in SI as of Q3 2025
| Institution | Position Value |
|---|---|
FMR LLC Institution | $48.3M 0.00% of portfolio |
DEERFIELD MANAGEMENT CO /NY Hedge Fund•Long/Short | $6.1M 0.10% of portfolio |
A Alyeska Investment Group, L.P. Hedge Fund•Multi-Strategy | $5.7M 0.02% of portfolio |
SECTORAL ASSET MANAGEMENT INC Venture Capital | $5.4M 3.38% of portfolio |
TimesSquare Capital Management, LLC Long Only Manager | $4.8M 0.07% of portfolio |
Sio Capital Management, LLC Hedge Fund•Long/Short | $4.4M 1.11% of portfolio |
B BlackRock, Inc. Institution | $3.5M 0.00% of portfolio |
FEDERATED INVESTORS INC /PA/ Long Only Manager | $2.5M 0.00% of portfolio |
VANGUARD GROUP INC Institution | $1.8M 0.00% of portfolio |
Marshall Wace LLP Institution | $1.7M 0.00% of portfolio |
Institutional buying and selling activity for SI in Q3 2025
| Institution | Net Bought |
|---|---|
FMR LLC Institution | +$48.3M +3.8M shares |
DEERFIELD MANAGEMENT CO /NY Hedge Fund•Long/Short | +$6.1M +482.6K shares |
A Alyeska Investment Group, L.P. Hedge Fund•Multi-Strategy | +$5.7M +451.5K shares |
SECTORAL ASSET MANAGEMENT INC Venture Capital | +$5.4M +430.3K shares |
TimesSquare Capital Management, LLC Long Only Manager | +$4.8M +382.4K shares |
Sio Capital Management, LLC Hedge Fund•Long/Short | +$4.4M +350.0K shares |
B BlackRock, Inc. Institution | +$3.5M +277.4K shares |
FEDERATED INVESTORS INC /PA/ Long Only Manager | +$2.5M +200.0K shares |
VANGUARD GROUP INC Institution | +$1.8M +146.3K shares |
Marshall Wace LLP Institution | +$1.7M +132.9K shares |
| Institution | Net Sold | |
|---|---|---|
| No sellers found | ||
Institutions that initiated new positions or completely exited SI in Q3 2025
| Institution | Position Value |
|---|---|
DEERFIELD MANAGEMENT CO /NY Hedge Fund•Long/Short | $6.1M 482.6K shares |
SECTORAL ASSET MANAGEMENT INC Venture Capital | $5.4M 430.3K shares |
Sio Capital Management, LLC Hedge Fund•Long/Short | $4.4M 350.0K shares |
R READYSTATE ASSET MANAGEMENT LP Hedge Fund•Multi-Strategy | $511.4K 40.7K shares |
O OXFORD ASSET MANAGEMENT Institution | $271.5K 21.6K shares |
$169.7K 13.5K shares | |
M MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. Institution | $27.8K 2.2K shares |
Sterling Capital Management LLC Long Only Manager | $1.4K 113.0 shares |
| Institution | Previous Position |
|---|---|
| No exited positions found | |
Institutions with the largest Call and Put options positions in SI as of Q3 2025
| Institution | Position Value |
|---|---|
| No call positions found | |
| Institution | Position Value |
|---|---|
| No put positions found | |
Institutions with SI as the highest % of their portfolio as of Q3 2025
| Institution | Portfolio Weight |
|---|---|
SECTORAL ASSET MANAGEMENT INC Venture Capital | 3.38% $5.4M |
Sio Capital Management, LLC Hedge Fund•Long/Short | 1.11% $4.4M |
Monashee Investment Management LLC Hedge Fund•Sector | 0.27% $502.0K |
DEERFIELD MANAGEMENT CO /NY Hedge Fund•Long/Short | 0.10% $6.1M |
O OXFORD ASSET MANAGEMENT Institution | 0.10% $271.5K |
TimesSquare Capital Management, LLC Long Only Manager | 0.07% $4.8M |
R READYSTATE ASSET MANAGEMENT LP Hedge Fund•Multi-Strategy | 0.05% $511.4K |
0.02% $169.7K | |
A Alyeska Investment Group, L.P. Hedge Fund•Multi-Strategy | 0.02% $5.7M |
Walleye Trading Advisors, LLC Hedge Fund•Multi-Strategy | 0.01% $901.3K |
Discover hedge funds investing in SI

| Top Holding | Sector | Market Value | Weight |
|---|---|---|---|
ETF ETF | $61.1M | 6.10% | |
Software - Infrastructure Technology | $54.5M | 5.44% | |
Medical - Diagnostics & Research Healthcare | $47.6M | 4.75% |
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