STEREOTAXIS INC STXS
COM NEW · Common Stock · CUSIP 85916J409 · ISIN US85916J4094
American medical robotics company
- SectorHealth care
- IndustryElectromedical & Electrotherapeutic Apparatus
- HeadquartersSt.Louis, MO
- Websitestereotaxis.com
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once. Holder counts are more reliable. Shares outstanding: 84.7m as of 2024-07-31, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $1.82. Options: 5 managers hold calls ($887.6k notional), 5 hold puts ($56.1k).
Trends to Q2 2024
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 72 |
| Q4 2022 | 75 |
| Q1 2023 | 69 |
| Q2 2023 | 60 |
| Q3 2023 | 59 |
| Q4 2023 | 62 |
| Q1 2024 | 82 |
| Q2 2024 | 74 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q4 2022 | 32 | 24 |
| Q1 2023 | 25 | 32 |
| Q2 2023 | 25 | 30 |
| Q3 2023 | 22 | 23 |
| Q4 2023 | 33 | 19 |
| Q1 2024 | 46 | 22 |
| Q2 2024 | 39 | 42 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2023 | $15.6k | $4.9k | 0.31 |
| Q4 2023 | $73.4k | $30.3k | 0.41 |
| Q1 2024 | $239.8k | $112.8k | 0.47 |
| Q2 2024 | $887.6k | $56.1k | 0.06 |
Biggest buyers
| BlackRock Inc. | Added | +2.5m |
| GEODE CAPITAL MANAGEMENT, LLC | Added | +661.3k |
| STATE STREET CORP | Added | +437.7k |
| VANGUARD GROUP INC | Added | +415.3k |
| ESSEX INVESTMENT MANAGEMENT CO LLC | Added | +212.4k |
| RENAISSANCE TECHNOLOGIES LLC | Added | +154.4k |
| Bank of New York Mellon Corp | Added | +135.0k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | Added | +129.1k |
| GMT Capital Corp | New | +126.6k |
| Lagoda Investment Management, L.P. | Added | +121.6k |
Biggest sellers
| Redmile Group, LLC | Reduced | -1.2m |
| Archon Capital Management LLC | Reduced | -904.8k |
| MILLENNIUM MANAGEMENT LLC | Sold out | -725.2k |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Sold out | -444.9k |
| GOLDMAN SACHS GROUP INC | Reduced | -332.3k |
| Informed Momentum Co LLC | Sold out | -274.2k |
| JANE STREET GROUP, LLC | Reduced | -259.5k |
| CITIGROUP INC | Reduced | -241.0k |
| Warberg Asset Management LLC | Reduced | -204.7k |
| MORGAN STANLEY | Reduced | -198.3k |
Biggest calls
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $731.3k401.8k shares |
| GROUP ONE TRADING LLC | New | $71.0k39.0k shares |
| SIMPLEX TRADING, LLC | Added | $65.0k36.0k shares |
| CITADEL ADVISORS LLC | Added | $20.4k11.2k shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | Unchanged | $00 shares |
Biggest puts
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $43.1k23.7k shares |
| GROUP ONE TRADING LLC | New | $7.3k4.0k shares |
| CITADEL ADVISORS LLC | Reduced | $4.7k2.6k shares |
| SIMPLEX TRADING, LLC | New | $1.0k1.0k shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | Unchanged | $00 shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| Kaufman Daniel Louis 13G · passive investor new · filed 2026-08-19 | 5.9% |
Fell to 5% or below in the last year: Lagoda Investment Management, L.P. (4.5%, 2026-05-15)
Insider purchases and sales in Q2 2024
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q3 2022 | 0 | — | 0 | — | — |
| Q4 2022 | 0 | — | 0 | — | — |
| Q1 2023 | 0 | — | 0 | — | — |
| Q2 2023 | 0 | — | 0 | — | — |
| Q3 2023 | 1 | $173.6k | 0 | — | — |
| Q4 2023 | 1 | $131.5k | 0 | — | — |
| Q1 2024 | 0 | — | 0 | — | — |
| Q2 2024 | 1 | $32.2k | 0 | — | — |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2024-06-14 | Isaac Paul J Director · See Footnote | Bought | $13.0k7.0k shares |
| 2024-05-31 | Isaac Paul J Director · See Footnote | Bought | $2.0k1.0k shares |
| 2024-05-29 | Isaac Paul J Director · See Footnote | Bought | $5.7k3.0k shares |
| 2024-05-28 | Isaac Paul J Director · See Footnote | Bought | $11.5k6.0k shares |
Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).
Holders, Q2 2024
| Manager | Shares | Change |
|---|---|---|
| DAFNA Capital Management LLC 5.95% of their portfolio | 13.7m $24.9m | Unchanged |
| Lagoda Investment Management, L.P. 4.14% of their portfolio | 3.9m $7.2m | Added +121.6k |
| BlackRock Inc. 0.00% of their portfolio | 3.5m $6.4m | Added +2.5m |
| VANGUARD GROUP INC 0.00% of their portfolio | 3.0m $5.5m | Added +415.3k |
| Arbiter Partners Capital Management LLC 10.24% of their portfolio | 2.8m $5.1m | Added +26.0k |
| Redmile Group, LLC 0.23% of their portfolio | 2.1m $3.8m | Reduced -1.2m |
| Archon Capital Management LLC 3.38% of their portfolio | 1.6m $2.9m | Reduced -904.8k |
| ESSEX INVESTMENT MANAGEMENT CO LLC 0.48% of their portfolio | 1.4m $2.6m | Added +212.4k |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 1.3m $2.4m | Added +661.3k |
| Prescott Group Capital Management, L.L.C. 0.23% of their portfolio | 823.7k $1.5m | Unchanged |
| STATE STREET CORP 0.00% of their portfolio | 644.1k $1.2m | Added +437.7k |
| AlphaCentric Advisors LLC 0.80% of their portfolio | 600.0k $1.1m | Unchanged |
| RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio | 488.7k $889.4k | Added +154.4k |
| Legato Capital Management LLC 0.12% of their portfolio | 472.1k $859.3k | Unchanged |
| Warberg Asset Management LLC 0.22% of their portfolio | 461.0k $820.6k | Reduced -204.7k |
| State of Wyoming 0.12% of their portfolio | 415.8k $756.7k | Added +29.0k |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC 0.01% of their portfolio | 249.7k $454.5k | Unchanged |
| Kovack Advisors, Inc. 0.04% of their portfolio | 223.8k $407.3k | Added +593 |
| Bank of New York Mellon Corp 0.00% of their portfolio | 189.6k $345.1k | Added +135.0k |
| Independent Advisor Alliance 0.01% of their portfolio | 180.0k $327.6k | Added +45.3k |
| ROYAL BANK OF CANADA 0.00% of their portfolio | 160.6k $292.0k | Reduced -844 |
| NORTHERN TRUST CORP 0.00% of their portfolio | 152.4k $277.4k | Added +12.8k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio | 151.8k $276.3k | Added +129.1k |
| GMT Capital Corp 0.01% of their portfolio | 126.6k $230.4k | New |
| Verition Fund Management LLC 0.00% of their portfolio | 106.6k $194.1k | Added +20.2k |
| MORGAN STANLEY 0.00% of their portfolio | 77.2k $140.5k | Reduced -198.3k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 76.2k $139.0k | Added +17.8k |
| Leonteq Securities AG 0.02% of their portfolio | 75.0k $133.5k | Unchanged |
| CITADEL ADVISORS LLC 0.00% of their portfolio | 74.3k $135.2k | Added +3.4k |
| Nuveen Asset Management, LLC 0.00% of their portfolio | 74.0k $134.7k | New |
| WEALTH EFFECTS LLC 0.05% of their portfolio | 72.1k $131.1k | Unchanged |
| Man Group plc 0.00% of their portfolio | 64.4k $117.2k | Reduced -33.9k |
| Polar Capital Holdings Plc 0.00% of their portfolio | 58.6k $106.6k | Reduced -11.2k |
| NEW YORK STATE COMMON RETIREMENT FUND 0.00% of their portfolio | 56.9k $103.6k | New |
| Alpine Global Management, LLC 0.02% of their portfolio | 52.1k $94.7k | New |
| RHUMBLINE ADVISERS 0.00% of their portfolio | 48.3k $87.8k | Added +41.8k |
| ENVESTNET ASSET MANAGEMENT INC 0.00% of their portfolio | 47.1k $85.8k | New |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 46.9k $85.4k | Reduced -69.3k |
| Wellington Shields & Co., LLC 0.02% of their portfolio | 37.2k $67.7k | Unchanged |
| MARSHALL WACE, LLP 0.00% of their portfolio | 36.2k $65.9k | Reduced -93.6k |
| Raymond James Financial Services Advisors, Inc. 0.00% of their portfolio | 35.9k $65.3k | Unchanged |
| Marathon Trading Investment Management LLC 0.02% of their portfolio | 35.6k $64.9k | Reduced -36.8k |
| LPL Financial LLC 0.00% of their portfolio | 34.8k $63.3k | Reduced -303 |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 33.9k $61.7k | Added +10.9k |
| Cherry Creek Investment Advisors, Inc. 0.03% of their portfolio | 29.8k $54.2k | Unchanged |
| Corebridge Financial, Inc. 0.00% of their portfolio | 29.5k $54.0k | First filing |
| Forum Financial Management, LP 0.00% of their portfolio | 26.5k $48.3k | New |
| Invesco Ltd. 0.00% of their portfolio | 26.3k $47.9k | New |
| JANE STREET GROUP, LLC 0.00% of their portfolio | 23.5k $42.7k | Reduced -259.5k |
| Robinswood Financial LLC 0.01% of their portfolio | 19.0k $34.6k | New |
| Summit Asset Management, LLC 0.01% of their portfolio | 18.7k $34.0k | Unchanged |
| BARCLAYS PLC 0.00% of their portfolio | 18.5k $33.7k | New |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 18.0k $32.8k | Added +17.6k |
| PNC Financial Services Group, Inc. 0.00% of their portfolio | 18.0k $32.8k | Unchanged |
| Investors Research Corp 0.01% of their portfolio | 17.9k $32.7k | Unchanged |
| UBS Group AG 0.00% of their portfolio | 16.7k $30.4k | Reduced -5.0k |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 15.7k $28.5k | Reduced -332.3k |
| Quadrature Capital Ltd 0.00% of their portfolio | 13.7k $24.4k | New |
| CITIGROUP INC 0.00% of their portfolio | 12.0k $21.8k | Reduced -241.0k |
| Tower Research Capital LLC (TRC) 0.00% of their portfolio | 11.9k $21.7k | Reduced -2.1k |
| GROUP ONE TRADING LLC 0.00% of their portfolio | 11.5k $20.9k | Added +2.6k |
| RAYMOND JAMES & ASSOCIATES 0.00% of their portfolio | 10.3k $18.8k | New |
| Roble, Belko & Company, Inc 0.00% of their portfolio | 10.0k $18.0k | Unchanged |
| CHOREO, LLC 0.00% of their portfolio | 10.0k $17.7k | Unchanged |
| Legal & General Group Plc 0.00% of their portfolio | 6.0k $10.6k | New |
| Ameritas Investment Partners, Inc. 0.00% of their portfolio | 5.4k $9.8k | New |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio | 4.0k $7.2k | New |
| OSAIC HOLDINGS, INC. 0.00% of their portfolio | 3.7k $6.7k | Added +750 |
| AMALGAMATED BANK 0.00% of their portfolio | 1.9k $3.0k | New |
| CIBC Private Wealth Group LLC 0.00% of their portfolio | 300 $537 | Unchanged |
| Aspire Private Capital, LLC 0.00% of their portfolio | 200 $364 | Unchanged |
| Avior Wealth Management, LLC 0.00% of their portfolio | 50 $91 | New |
| INNEALTA CAPITAL, LLC 0.00% of their portfolio | 23 $42 | New |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. 0.00% of their portfolio | 0 $0 | Unchanged |