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: 80.9m as of 2023-10-31, 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 ≈ $1.58. Options: 3 managers hold calls ($15.6k notional), 3 hold puts ($4.9k).
Trends to Q3 2023
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 |
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 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q4 2022 | $50.6k | $2.5k | 0.05 |
| Q1 2023 | $19.3k | $63.8k | 3.31 |
| Q2 2023 | $47.7k | $40.8k | 0.86 |
| Q3 2023 | $15.6k | $4.9k | 0.31 |
Biggest buyers
| Archon Capital Management LLC | Added | +223.8k |
| Lagoda Investment Management, L.P. | Added | +176.2k |
| Arbiter Partners Capital Management LLC | Added | +105.7k |
| GEODE CAPITAL MANAGEMENT, LLC | Added | +91.8k |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | New | +77.9k |
| NORTHERN TRUST CORP | Added | +56.8k |
| State of Wyoming | Added | +54.0k |
| AlphaCentric Advisors LLC | Added | +50.0k |
| Verition Fund Management LLC | Added | +37.3k |
| BlackRock Inc. | Added | +34.9k |
Biggest sellers
| Opaleye Management Inc. | Sold out | -3.1m |
| Redmile Group, LLC | Reduced | -608.1k |
| TWO SIGMA ADVISERS, LP | Sold out | -97.2k |
| GSA CAPITAL PARTNERS LLP | Sold out | -84.8k |
| MILLENNIUM MANAGEMENT LLC | Reduced | -79.7k |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | Reduced | -76.2k |
| TWO SIGMA INVESTMENTS, LP | Sold out | -44.3k |
| ESSEX INVESTMENT MANAGEMENT CO LLC | Reduced | -25.8k |
| MARATHON CAPITAL MANAGEMENT | Reduced | -25.0k |
| Legato Capital Management LLC | Reduced | -22.6k |
Biggest calls
| SIMPLEX TRADING, LLC | Reduced | $14.0k9.4k shares |
| CITADEL ADVISORS LLC | Reduced | $1.6k1.0k shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | Unchanged | $00 shares |
Biggest puts
| CITADEL ADVISORS LLC | Added | $3.3k2.1k shares |
| GROUP ONE TRADING LLC | Added | $1.6k1.0k 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 Q3 2023
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 |
|---|---|---|---|---|---|
| Q4 2021 | 0 | — | 0 | — | — |
| Q1 2022 | 0 | — | 0 | — | — |
| Q2 2022 | 1 | $516.8k | 0 | — | — |
| Q3 2022 | 0 | — | 0 | — | — |
| Q4 2022 | 0 | — | 0 | — | — |
| Q1 2023 | 0 | — | 0 | — | — |
| Q2 2023 | 0 | — | 0 | — | — |
| Q3 2023 | 1 | $173.6k | 0 | — | — |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2023-09-15 | Isaac Paul J Director · See Footnote | Bought | $26.1k16.0k shares |
| 2023-09-14 | Isaac Paul J Director · See Footnote | Bought | $11.8k7.2k shares |
| 2023-09-13 | Isaac Paul J Director · See Footnote | Bought | $10.6k6.3k shares |
| 2023-09-12 | Isaac Paul J Director · See Footnote | Bought | $2.0k1.2k shares |
| 2023-08-30 | Isaac Paul J Director · See Footnote | Bought | $17.1k10.0k shares |
| 2023-08-29 | Isaac Paul J Director · See Footnote | Bought | $11.5k6.7k shares |
| 2023-08-28 | Isaac Paul J Director · See Footnote | Bought | $15.9k9.3k shares |
| 2023-08-25 | Isaac Paul J Director · See Footnote | Bought | $8.6k5.0k shares |
| 2023-08-24 | Isaac Paul J Director · See Footnote | Bought | $7.1k4.0k shares |
| 2023-08-22 | Isaac Paul J Director · See Footnote | Bought | $10.5k6.0k shares |
| 2023-08-21 | Isaac Paul J Director · See Footnote | Bought | $10.2k6.2k shares |
| 2023-08-17 | Isaac Paul J Director · See Footnote | Bought | $9.2k6.0k shares |
| 2023-08-16 | Isaac Paul J Director · See Footnote | Bought | $7.2k4.7k shares |
| 2023-08-15 | Isaac Paul J Director · See Footnote | Bought | $25.2k16.7k shares |
| 2023-08-14 | Isaac Paul J Director · See Footnote | Bought | $604400 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, Q3 2023
| Manager | Shares | Change |
|---|---|---|
| DAFNA Capital Management LLC 6.72% of their portfolio | 13.7m $21.6m | Unchanged |
| Redmile Group, LLC 0.43% of their portfolio | 5.8m $9.1m | Reduced -608.1k |
| Lagoda Investment Management, L.P. 3.37% of their portfolio | 3.2m $5.1m | Added +176.2k |
| Arbiter Partners Capital Management LLC 7.61% of their portfolio | 2.7m $4.2m | Added +105.7k |
| Archon Capital Management LLC 1.90% of their portfolio | 2.7m $4.2m | Added +223.8k |
| VANGUARD GROUP INC 0.00% of their portfolio | 2.2m $3.4m | Added +7.6k |
| ESSEX INVESTMENT MANAGEMENT CO LLC 0.34% of their portfolio | 1.3m $2.1m | Reduced -25.8k |
| BlackRock Inc. 0.00% of their portfolio | 1.1m $1.7m | Added +34.9k |
| Prescott Group Capital Management, L.L.C. 0.25% of their portfolio | 722.7k $1.1m | Unchanged |
| AlphaCentric Advisors LLC 0.54% of their portfolio | 600.0k $948.0k | Added +50.0k |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 539.1k $852.0k | Added +91.8k |
| Legato Capital Management LLC 0.11% of their portfolio | 472.1k $746.0k | Reduced -22.6k |
| RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio | 289.7k $458.0k | Added +24.7k |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC 0.01% of their portfolio | 249.7k $394.5k | Reduced -76.2k |
| Verition Fund Management LLC 0.01% of their portfolio | 239.6k $378.5k | Added +37.3k |
| STATE STREET CORP 0.00% of their portfolio | 194.7k $307.6k | Unchanged |
| Kovack Advisors, Inc. 0.04% of their portfolio | 191.9k $303.2k | Added +11.5k |
| State of Wyoming 0.06% of their portfolio | 190.3k $300.6k | Added +54.0k |
| ROYAL BANK OF CANADA 0.00% of their portfolio | 155.4k $246.0k | Reduced -790 |
| CITADEL ADVISORS LLC 0.00% of their portfolio | 151.2k $238.9k | Reduced -22.3k |
| NORTHERN TRUST CORP 0.00% of their portfolio | 139.6k $220.6k | Added +56.8k |
| DIMENSIONAL FUND ADVISORS LP 0.00% of their portfolio | 135.2k $213.7k | Reduced -948 |
| GMT Capital Corp 0.01% of their portfolio | 126.6k $200.0k | Unchanged |
| Independent Advisor Alliance 0.01% of their portfolio | 101.3k $160.1k | Added +10.0k |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio | 77.9k $123.0k | New |
| Polar Capital Holdings Plc 0.00% of their portfolio | 76.7k $121.2k | Unchanged |
| Leonteq Securities AG 0.01% of their portfolio | 75.0k $119.2k | Unchanged |
| WEALTH EFFECTS LLC 0.05% of their portfolio | 69.1k $109.1k | Added +9.5k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 58.4k $93.0k | Unchanged |
| Bank of New York Mellon Corp 0.00% of their portfolio | 44.6k $70.5k | Reduced -18.2k |
| Cherry Creek Investment Advisors, Inc. 0.04% of their portfolio | 37.1k $58.7k | Reduced -1.7k |
| Wellington Shields & Co., LLC 0.01% of their portfolio | 35.4k $55.9k | Unchanged |
| LPL Financial LLC 0.00% of their portfolio | 34.2k $54.0k | New |
| MORGAN STANLEY 0.00% of their portfolio | 24.0k $37.8k | Reduced -2.0k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio | 22.7k $35.9k | Unchanged |
| Atom Investors LP 0.01% of their portfolio | 22.7k $35.8k | Reduced -5.5k |
| BARCLAYS PLC 0.00% of their portfolio | 22.1k $34.8k | New |
| PNC Financial Services Group, Inc. 0.00% of their portfolio | 18.0k $28.4k | Unchanged |
| MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio | 17.2k $27.2k | Reduced -79.7k |
| Raymond James Financial Services Advisors, Inc. 0.00% of their portfolio | 16.9k $26.7k | Reduced -1.0k |
| Summit Asset Management, LLC 0.01% of their portfolio | 16.6k $26.2k | Unchanged |
| Engineers Gate Manager LP 0.00% of their portfolio | 16.3k $25.8k | Unchanged |
| Coury Firm Asset Management LLC 0.04% of their portfolio | 16.1k $25.4k | Reduced -1.5k |
| US BANCORP \DE\ 0.00% of their portfolio | 15.6k $24.7k | Unchanged |
| Robertson Stephens Wealth Management, LLC 0.00% of their portfolio | 15.0k $23.7k | Reduced -5.0k |
| PACIFIC GLOBAL INVESTMENT MANAGEMENT CO 0.00% of their portfolio | 14.0k $22.1k | Added +1.2k |
| EVERETT HARRIS & CO /CA/ 0.00% of their portfolio | 12.7k $20.1k | Unchanged |
| MARATHON CAPITAL MANAGEMENT 0.00% of their portfolio | 12.2k $19.4k | Reduced -25.0k |
| Qube Research & Technologies Ltd 0.00% of their portfolio | 10.9k $17.3k | New |
| Roble, Belko & Company, Inc 0.00% of their portfolio | 10.0k $16.0k | Unchanged |
| CITIGROUP INC 0.00% of their portfolio | 9.1k $14.4k | New |
| RHUMBLINE ADVISERS 0.00% of their portfolio | 6.5k $10.2k | Unchanged |
| OSAIC HOLDINGS, INC. 0.00% of their portfolio | 5.6k $8.9k | Added +500 |
| UBS Group AG 0.00% of their portfolio | 2.7k $4.2k | Reduced -2.0k |
| SIMPLEX TRADING, LLC 0.00% of their portfolio | 1.2k $1.0k | Reduced -11.6k |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 797 $1.3k | Added +142 |
| Aspire Private Capital, LLC 0.00% of their portfolio | 200 $316 | Unchanged |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 112 $177 | Unchanged |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. 0.00% of their portfolio | 0 $0 | Unchanged |