Vault-13

STEREOTAXIS INC STXS

COM NEW · Common Stock · CUSIP 85916J409 · ISIN US85916J4094

American medical robotics company

72 institutional holders
36,319,19136.3m shares reported held*
48.5% of all shares outstanding*
$65.4mreported value*

* 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: 74.8m as of 2022-10-31, 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 ≈ $1.80. Options: 3 managers hold calls ($212.0k notional), 2 hold puts ($0).

Biggest calls

CITADEL ADVISORS LLC — $137.0k76.0k shares
GROUP ONE TRADING LLC — $75.0k41.9k shares
CONCOURSE FINANCIAL GROUP SECURITIES, INC. — $00 shares

Biggest puts

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.

HolderStakeChangeShares Last filed
Kaufman Daniel Louis 13G · passive investor new · filed 2026-08-19 5.9% new 6.0m≈ $10.2m 2026-08-19

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 2022

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)

BuyingSelling
101Q4 20: 0 buyingQ4 20: 0 sellingQ1 21: 0 buyingQ1 21: 0 sellingQ1 21Q2 21: 0 buyingQ2 21: 0 sellingQ3 21: 0 buyingQ3 21: 0 sellingQ3 21Q4 21: 0 buyingQ4 21: 0 sellingQ1 22: 0 buyingQ1 22: 0 sellingQ1 22Q2 22: 1 buyingQ2 22: 0 sellingQ3 22: 0 buyingQ3 22: 0 sellingQ3 22
Numbers
QuarterBuyingBoughtSellingSoldSold under a plan
Q4 20200—0——
Q1 20210—0——
Q2 20210—0——
Q3 20210—0——
Q4 20210—0——
Q1 20220—0——
Q2 20221$516.8k0——
Q3 20220—0——

None reported in Q3 2022.

Holders, Q3 2022

#ManagerLocationShares Value% of their portfolioChangeShares change
1 DAFNA Capital Management LLC 6.62% of their portfolio LOS ANGELES, CA 13,680,55413.7m $24.6m $24.6m 6.62% —
2 Arbiter Partners Capital Management LLC 6.54% of their portfolio NEW YORK, NY 2,554,5832.6m $4.6m $4.6m 6.54% —
3 Lagoda Investment Management, L.P. 2.81% of their portfolio NEW YORK, NY 2,194,9402.2m $4.0m $4.0m 2.81% —
4 VANGUARD GROUP INC 0.00% of their portfolio Valley Forge, PA 2,116,6162.1m $3.8m $3.8m 0.00% —
5 Iron Triangle Partners LP 0.53% of their portfolio Cos Cob, CT 1,696,5991.7m $3.1m $3.1m 0.53% —
6 Opaleye Management Inc. 1.16% of their portfolio BOSTON, MA 1,556,8001.6m $2.8m $2.8m 1.16% —
7 Redmile Group, LLC 0.10% of their portfolio LARKSPUR, CA 1,487,4951.5m $2.7m $2.7m 0.10% —
8 MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio NEW YORK, NY 1,203,9921.2m $2.2m $2.2m 0.00% —
9 BlackRock Inc. 0.00% of their portfolio New York, NY 1,010,1791.0m $1.8m $1.8m 0.00% —
10 Parian Global Management LP 4.81% of their portfolio POUND RIDGE, NY 821,066821.1k $1.5m $1.5m 4.81% —
11 Rhenman & Partners Asset Management AB 0.16% of their portfolio Stockholm, V7 797,330797.3k $1.5m $1.5m 0.16% —
12 RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio NEW YORK, NY 557,500557.5k $1.0m $1.0m 0.00% —
13 ESSEX INVESTMENT MANAGEMENT CO LLC 0.16% of their portfolio BOSTON, MA 552,451552.5k $994.0k $994.0k 0.16% —
14 Penn Capital Management Company, LLC 0.10% of their portfolio PHILADELPHIA, PA 514,357514.4k $926.0k $926.0k 0.10% —
15 AlphaCentric Advisors LLC 0.92% of their portfolio SAN JUAN, PR 500,000500.0k $900.0k $900.0k 0.92% —
16 GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio BOSTON, MA 439,870439.9k $791.0k $791.0k 0.00% —
17 Prescott Group Capital Management, L.L.C. 0.24% of their portfolio Tulsa, OK 428,055428.1k $770.0k $770.0k 0.24% —
18 Verition Fund Management LLC 0.01% of their portfolio GREENWICH, CT 414,816414.8k $746.0k $746.0k 0.01% —
19 SILVERARC CAPITAL MANAGEMENT, LLC 0.26% of their portfolio BOSTON, MA 346,231346.2k $623.0k $623.0k 0.26% —
20 TWO SIGMA ADVISERS, LP 0.00% of their portfolio NEW YORK, NY 319,600319.6k $575.0k $575.0k 0.00% —
21 GSA CAPITAL PARTNERS LLP 0.07% of their portfolio LONDON, X0 278,921278.9k $502.0k $502.0k 0.07% —
22 NORTH RUN CAPITAL, LP 0.92% of their portfolio BOSTON, MA 251,160251.2k $452.0k $452.0k 0.92% —
23 TWO SIGMA INVESTMENTS, LP 0.00% of their portfolio NEW YORK, NY 214,239214.2k $386.0k $386.0k 0.00% —
24 Ergoteles LLC 0.01% of their portfolio NEW YORK, NY 189,386189.4k $341.0k $341.0k 0.01% —
25 STATE STREET CORP 0.00% of their portfolio BOSTON, MA 172,989173.0k $311.0k $311.0k 0.00% —
26 ROYAL BANK OF CANADA 0.00% of their portfolio TORONTO, A6 155,558155.6k $280.0k $280.0k 0.00% —
27 DIMENSIONAL FUND ADVISORS LP 0.00% of their portfolio AUSTIN, TX 147,518147.5k $266.0k $266.0k 0.00% —
28 D. E. Shaw & Co., Inc. 0.00% of their portfolio New York, NY 129,555129.6k $233.0k $233.0k 0.00% —
29 GMT Capital Corp 0.01% of their portfolio ATLANTA, GA 126,581126.6k $228.0k $228.0k 0.01% —
30 Leonteq Securities AG 0.01% of their portfolio ZURICH, V8 113,994114.0k $205.2k $205.2k 0.01% —
31 Independent Advisor Alliance 0.01% of their portfolio CHARLOTTE, NC 100,385100.4k $181.0k $181.0k 0.01% —
32 State of Wyoming 0.08% of their portfolio CHEYENNE, WY 87,79487.8k $158.0k $158.0k 0.08% —
33 UBS Group AG 0.00% of their portfolio ZURICH, V8 81,77781.8k $147.0k $147.0k 0.00% —
34 NORTHERN TRUST CORP 0.00% of their portfolio CHICAGO, IL 78,36878.4k $141.0k $141.0k 0.00% —
35 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 78,06478.1k $141.0k $141.0k 0.00% —
36 Polar Capital Holdings Plc 0.00% of their portfolio London, X0 76,68776.7k $138.0k $138.0k 0.00% —
37 BRIDGEWAY CAPITAL MANAGEMENT, LLC 0.00% of their portfolio HOUSTON, TX 76,20076.2k $137.0k $137.0k 0.00% —
38 CITADEL ADVISORS LLC 0.00% of their portfolio MIAMI, FL 75,39275.4k $136.0k $136.0k 0.00% —
39 Kovack Advisors, Inc. 0.02% of their portfolio FT. LAUDERDALE, FL 67,93367.9k $122.0k $122.0k 0.02% —
40 Atom Investors LP 0.03% of their portfolio AUSTIN, TX 49,27249.3k $89.0k $89.0k 0.03% —
41 WEALTH EFFECTS LLC 0.05% of their portfolio BOSTON, MA 48,66048.7k $88.0k $88.0k 0.05% —
42 MARATHON CAPITAL MANAGEMENT 0.02% of their portfolio Hunt Valley, MD 47,25047.2k $85.0k $85.0k 0.02% —
43 Bank of New York Mellon Corp 0.00% of their portfolio NEW YORK, NY 44,22944.2k $80.0k $80.0k 0.00% —
44 J.P. Morgan Private Wealth Advisors LLC 0.00% of their portfolio SAN FRANCISCO, CA 41,59341.6k $75.0k $75.0k 0.00% —
45 Qube Research & Technologies Ltd 0.00% of their portfolio LONDON, X0 39,31439.3k $71.0k $71.0k 0.00% —
46 Engineers Gate Manager LP 0.00% of their portfolio NEW YORK, NY 34,39134.4k $62.0k $62.0k 0.00% —
47 PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio BALTIMORE, MD 33,60033.6k $61.0k $61.0k 0.00% —
48 Cherry Creek Investment Advisors, Inc. 0.05% of their portfolio ENGLEWOOD, CO 32,50632.5k $59.0k $59.0k 0.05% —
49 EVERETT HARRIS & CO /CA/ 0.00% of their portfolio LOS ANGELES, CA 25,00025.0k $45.0k $45.0k 0.00% —
50 Robertson Stephens Wealth Management, LLC 0.01% of their portfolio San Francisco, CA 25,00025.0k $45.0k $45.0k 0.01% —
51 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio SAN FRANCISCO, CA 22,69622.7k $41.0k $41.0k 0.00% —
52 PNC Financial Services Group, Inc. 0.00% of their portfolio Pittsburgh, PA 18,00018.0k $32.0k $32.0k 0.00% —
53 LMR Partners LLP 0.00% of their portfolio LONDON, X0 17,70317.7k $32.0k $32.0k 0.00% —
54 Coury Firm Asset Management LLC 0.05% of their portfolio PITTSBURGH, PA 17,60017.6k $32.0k $32.0k 0.05% —
55 Summit Asset Management, LLC 0.01% of their portfolio MEMPHIS, TN 16,56016.6k $30.0k $30.0k 0.01% —
56 US BANCORP \DE\ 0.00% of their portfolio MINNEAPOLIS, MN 15,64515.6k $28.0k $28.0k 0.00% —
57 Wellington Shields & Co., LLC 0.01% of their portfolio NEW YORK, NY 15,50015.5k $28.0k $28.0k 0.01% —
58 Cresset Asset Management, LLC 0.00% of their portfolio Chicago, IL 15,00015.0k $27.0k $27.0k 0.00% —
59 JACOBS LEVY EQUITY MANAGEMENT, INC 0.00% of their portfolio FLORHAM PARK, NJ 14,70214.7k $26.0k $26.0k 0.00% —
60 Affinity Capital Advisors, LLC 0.01% of their portfolio BERKELEY, CA 11,90011.9k $21.0k $21.0k 0.01% —
61 OSAIC HOLDINGS, INC. 0.00% of their portfolio SCOTTSDALE, AZ 11,68711.7k $20.0k $20.0k 0.00% —
62 Warberg Asset Management LLC 0.00% of their portfolio WINNETKA, IL 10,00010.0k $18.0k $18.0k 0.00% —
63 BDO Wealth Advisors, LLC 0.00% of their portfolio JACKSONVILLE, FL 10,00010.0k $18.0k $18.0k 0.00% —
64 MONEY CONCEPTS CAPITAL CORP 0.00% of their portfolio PALM BEACH GARDENS, FL 3,0003.0k $5.0k $5.0k 0.00% —
65 BANK OF AMERICA CORP /DE/ 0.00% of their portfolio CHARLOTTE, NC 1,5921.6k $3.0k $3.0k 0.00% —
66 WELLS FARGO & COMPANY/MN 0.00% of their portfolio SAN FRANCISCO, CA 604604 $2.0k $2.0k 0.00% —
67 Aspire Private Capital, LLC 0.00% of their portfolio Cornelius, NC 200200 $0 $0 0.00% —
68 FMR LLC 0.00% of their portfolio BOSTON, MA 189189 $0 $0 0.00% —
69 SIMPLEX TRADING, LLC 0.00% of their portfolio CHICAGO, IL 125125 $0 $0 0.00% —
70 JPMORGAN CHASE & CO 0.00% of their portfolio NEW YORK, NY 112112 $0 $0 0.00% —
71 CREDIT SUISSE AG/ 0.00% of their portfolio ZURICH, V8 2626 $0 $0 0.00% —
72 CONCOURSE FINANCIAL GROUP SECURITIES, INC. 0.00% of their portfolio BIRMINGHAM, AL 00 $0 $0 0.00% —