Vault-13

STEREOTAXIS INC STXS

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

American medical robotics company

74 institutional holders -8 vs Q1 2024
40,256,64040.3m shares reported held*
47.6% of all shares outstanding*
$73.2mreported value*
17 new 22 added 16 reduced 26 sold out net sold ≈ $953.9k (-525.8k shares)

* 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

050100Q3 22: 72Q4 22: 75Q1 23: 69Q2 23: 60Q3 23: 59Q4 23: 62Q1 24: 82Q2 24: 7474Q3 22Q1 23Q3 23Q1 24Q2 24
Numbers
QuarterHolders
Q3 202272
Q4 202275
Q1 202369
Q2 202360
Q3 202359
Q4 202362
Q1 202482
Q2 202474

Buyers vs sellers

Managers adding to or starting a position, vs cutting or selling out

Bought or addedCut or sold out
50050Q4 22: 32 bought or addedQ4 22: 24 cut or sold outQ4 22Q1 23: 25 bought or addedQ1 23: 32 cut or sold outQ2 23: 25 bought or addedQ2 23: 30 cut or sold outQ2 23Q3 23: 22 bought or addedQ3 23: 23 cut or sold outQ4 23: 33 bought or addedQ4 23: 19 cut or sold outQ4 23Q1 24: 46 bought or addedQ1 24: 22 cut or sold outQ2 24: 39 bought or addedQ2 24: 42 cut or sold outQ2 24
Numbers
QuarterBought or addedCut or sold out
Q4 20223224
Q1 20232532
Q2 20232530
Q3 20232223
Q4 20233319
Q1 20244622
Q2 20243942

Calls vs puts

Options held, notional value, last 4 quarters. P/C = puts ÷ calls

CallsPuts
$0$250k$500k$750k$1mQ3 23 calls: $15.6kQ3 23 puts: $4.9kQ3 23P/C 0.31Q4 23 calls: $73.4kQ4 23 puts: $30.3kQ4 23P/C 0.41Q1 24 calls: $239.8kQ1 24 puts: $112.8kQ1 24P/C 0.47Q2 24 calls: $887.6kQ2 24 puts: $56.1kQ2 24P/C 0.06
Numbers
QuarterCallsPutsP/C
Q3 2023$15.6k$4.9k0.31
Q4 2023$73.4k$30.3k0.41
Q1 2024$239.8k$112.8k0.47
Q2 2024$887.6k$56.1k0.06

Biggest buyers

BlackRock Inc. Added +2,474,678+2.5m
GEODE CAPITAL MANAGEMENT, LLC Added +661,340+661.3k
STATE STREET CORP Added +437,705+437.7k
VANGUARD GROUP INC Added +415,285+415.3k
ESSEX INVESTMENT MANAGEMENT CO LLC Added +212,423+212.4k
RENAISSANCE TECHNOLOGIES LLC Added +154,400+154.4k
Bank of New York Mellon Corp Added +135,041+135.0k
CHARLES SCHWAB INVESTMENT MANAGEMENT INC Added +129,110+129.1k
GMT Capital Corp New +126,581+126.6k
Lagoda Investment Management, L.P. Added +121,575+121.6k

Biggest sellers

Redmile Group, LLC Reduced -1,200,579-1.2m
Archon Capital Management LLC Reduced -904,831-904.8k
MILLENNIUM MANAGEMENT LLC Sold out -725,237-725.2k
SUSQUEHANNA INTERNATIONAL GROUP, LLP Sold out -444,908-444.9k
GOLDMAN SACHS GROUP INC Reduced -332,271-332.3k
Informed Momentum Co LLC Sold out -274,191-274.2k
JANE STREET GROUP, LLC Reduced -259,521-259.5k
CITIGROUP INC Reduced -241,037-241.0k
Warberg Asset Management LLC Reduced -204,688-204.7k
MORGAN STANLEY Reduced -198,348-198.3k

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.

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 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)

BuyingSelling
101Q3 22: 0 buyingQ3 22: 0 sellingQ4 22: 0 buyingQ4 22: 0 sellingQ4 22Q1 23: 0 buyingQ1 23: 0 sellingQ2 23: 0 buyingQ2 23: 0 sellingQ2 23Q3 23: 1 buyingQ3 23: 0 sellingQ4 23: 1 buyingQ4 23: 0 sellingQ4 23Q1 24: 0 buyingQ1 24: 0 sellingQ2 24: 1 buyingQ2 24: 0 sellingQ2 24
Numbers
QuarterBuyingBoughtSellingSoldSold under a plan
Q3 20220—0——
Q4 20220—0——
Q1 20230—0——
Q2 20230—0——
Q3 20231$173.6k0——
Q4 20231$131.5k0——
Q1 20240—0——
Q2 20241$32.2k0——
DateInsiderTradeSharesPrice ValueTheir holding
2024-06-14 Isaac Paul J Director · See Footnote Bought 7,000 $1.86 $13.0k7.0k shares +<1%
2024-05-31 Isaac Paul J Director · See Footnote Bought 1,000 $1.96 $2.0k1.0k shares +<1%
2024-05-29 Isaac Paul J Director · See Footnote Bought 3,026 $1.90 $5.7k3.0k shares +<1%
2024-05-28 Isaac Paul J Director · See Footnote Bought 6,000 $1.91 $11.5k6.0k shares +<1%

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

#ManagerLocationShares Value% of their portfolioChangeShares change
1 DAFNA Capital Management LLC 5.95% of their portfolio LOS ANGELES, CA 13,680,55413.7m $24.9m $24.9m 5.95% Unchanged
2 Lagoda Investment Management, L.P. 4.14% of their portfolio NEW YORK, NY 3,948,9053.9m $7.2m $7.2m 4.14% Added +121.6k +121,575
3 BlackRock Inc. 0.00% of their portfolio New York, NY 3,542,8063.5m $6.4m $6.4m 0.00% Added +2.5m +2,474,678
4 VANGUARD GROUP INC 0.00% of their portfolio Valley Forge, PA 3,029,2513.0m $5.5m $5.5m 0.00% Added +415.3k +415,285
5 Arbiter Partners Capital Management LLC 10.24% of their portfolio NEW YORK, NY 2,781,7192.8m $5.1m $5.1m 10.24% Added +26.0k +26,026
6 Redmile Group, LLC 0.23% of their portfolio LARKSPUR, CA 2,108,2192.1m $3.8m $3.8m 0.23% Reduced -1.2m -1,200,579
7 Archon Capital Management LLC 3.38% of their portfolio Seattle, WA 1,598,0801.6m $2.9m $2.9m 3.38% Reduced -904.8k -904,831
8 ESSEX INVESTMENT MANAGEMENT CO LLC 0.48% of their portfolio BOSTON, MA 1,406,4121.4m $2.6m $2.6m 0.48% Added +212.4k +212,423
9 GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio BOSTON, MA 1,298,4651.3m $2.4m $2.4m 0.00% Added +661.3k +661,340
10 Prescott Group Capital Management, L.L.C. 0.23% of their portfolio Tulsa, OK 823,652823.7k $1.5m $1.5m 0.23% Unchanged
11 STATE STREET CORP 0.00% of their portfolio BOSTON, MA 644,094644.1k $1.2m $1.2m 0.00% Added +437.7k +437,705
12 AlphaCentric Advisors LLC 0.80% of their portfolio SAN JUAN, PR 600,000600.0k $1.1m $1.1m 0.80% Unchanged
13 RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio NEW YORK, NY 488,700488.7k $889.4k $889.4k 0.00% Added +154.4k +154,400
14 Legato Capital Management LLC 0.12% of their portfolio San Francisco, CA 472,150472.1k $859.3k $859.3k 0.12% Unchanged
15 Warberg Asset Management LLC 0.22% of their portfolio WINNETKA, IL 461,000461.0k $820.6k $820.6k 0.22% Reduced -204.7k -204,688
16 State of Wyoming 0.12% of their portfolio CHEYENNE, WY 415,751415.8k $756.7k $756.7k 0.12% Added +29.0k +28,960
17 BRIDGEWAY CAPITAL MANAGEMENT, LLC 0.01% of their portfolio HOUSTON, TX 249,700249.7k $454.5k $454.5k 0.01% Unchanged
18 Kovack Advisors, Inc. 0.04% of their portfolio FT. LAUDERDALE, FL 223,776223.8k $407.3k $407.3k 0.04% Added +593 +593
19 Bank of New York Mellon Corp 0.00% of their portfolio NEW YORK, NY 189,592189.6k $345.1k $345.1k 0.00% Added +135.0k +135,041
20 Independent Advisor Alliance 0.01% of their portfolio CHARLOTTE, NC 180,020180.0k $327.6k $327.6k 0.01% Added +45.3k +45,265
21 ROYAL BANK OF CANADA 0.00% of their portfolio TORONTO, A6 160,595160.6k $292.0k $292.0k 0.00% Reduced -844 -844
22 NORTHERN TRUST CORP 0.00% of their portfolio CHICAGO, IL 152,417152.4k $277.4k $277.4k 0.00% Added +12.8k +12,836
23 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio SAN FRANCISCO, CA 151,806151.8k $276.3k $276.3k 0.00% Added +129.1k +129,110
24 GMT Capital Corp 0.01% of their portfolio ATLANTA, GA 126,581126.6k $230.4k $230.4k 0.01% New
25 Verition Fund Management LLC 0.00% of their portfolio GREENWICH, CT 106,635106.6k $194.1k $194.1k 0.00% Added +20.2k +20,234
26 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 77,22377.2k $140.5k $140.5k 0.00% Reduced -198.3k -198,348
27 PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio BALTIMORE, MD 76,19976.2k $139.0k $139.0k 0.00% Added +17.8k +17,799
28 Leonteq Securities AG 0.02% of their portfolio ZURICH, V8 74,99475.0k $133.5k $133.5k 0.02% Unchanged
29 CITADEL ADVISORS LLC 0.00% of their portfolio MIAMI, FL 74,31174.3k $135.2k $135.2k 0.00% Added +3.4k +3,427
30 Nuveen Asset Management, LLC 0.00% of their portfolio CHICAGO, IL 73,99074.0k $134.7k $134.7k 0.00% New
31 WEALTH EFFECTS LLC 0.05% of their portfolio BOSTON, MA 72,06072.1k $131.1k $131.1k 0.05% Unchanged
32 Man Group plc 0.00% of their portfolio LONDON, X0 64,38664.4k $117.2k $117.2k 0.00% Reduced -33.9k -33,853
33 Polar Capital Holdings Plc 0.00% of their portfolio London, X0 58,57058.6k $106.6k $106.6k 0.00% Reduced -11.2k -11,157
34 NEW YORK STATE COMMON RETIREMENT FUND 0.00% of their portfolio ALBANY, NY 56,90056.9k $103.6k $103.6k 0.00% New
35 Alpine Global Management, LLC 0.02% of their portfolio NEW YORK, NY 52,05252.1k $94.7k $94.7k 0.02% New
36 RHUMBLINE ADVISERS 0.00% of their portfolio BOSTON, MA 48,25148.3k $87.8k $87.8k 0.00% Added +41.8k +41,780
37 ENVESTNET ASSET MANAGEMENT INC 0.00% of their portfolio Berwyn, PA 47,12847.1k $85.8k $85.8k 0.00% New
38 JPMORGAN CHASE & CO 0.00% of their portfolio NEW YORK, NY 46,94646.9k $85.4k $85.4k 0.00% Reduced -69.3k -69,258
39 Wellington Shields & Co., LLC 0.02% of their portfolio NEW YORK, NY 37,19337.2k $67.7k $67.7k 0.02% Unchanged
40 MARSHALL WACE, LLP 0.00% of their portfolio LONDON, X0 36,20936.2k $65.9k $65.9k 0.00% Reduced -93.6k -93,552
41 Raymond James Financial Services Advisors, Inc. 0.00% of their portfolio ST. PETERSBURG, FL 35,88735.9k $65.3k $65.3k 0.00% Unchanged
42 Marathon Trading Investment Management LLC 0.02% of their portfolio RADNOR, PA 35,64235.6k $64.9k $64.9k 0.02% Reduced -36.8k -36,758
43 LPL Financial LLC 0.00% of their portfolio FORT MILL, SC 34,75434.8k $63.3k $63.3k 0.00% Reduced -303 -303
44 BANK OF AMERICA CORP /DE/ 0.00% of their portfolio CHARLOTTE, NC 33,88333.9k $61.7k $61.7k 0.00% Added +10.9k +10,884
45 Cherry Creek Investment Advisors, Inc. 0.03% of their portfolio ENGLEWOOD, CO 29,80229.8k $54.2k $54.2k 0.03% Unchanged
46 Corebridge Financial, Inc. 0.00% of their portfolio HOUSTON, TX 29,49029.5k $54.0k $54.0k 0.00% First filing
47 Forum Financial Management, LP 0.00% of their portfolio LOMBARD, IL 26,51826.5k $48.3k $48.3k 0.00% New
48 Invesco Ltd. 0.00% of their portfolio ATLANTA, GA 26,32726.3k $47.9k $47.9k 0.00% New
49 JANE STREET GROUP, LLC 0.00% of their portfolio NEW YORK, NY 23,46023.5k $42.7k $42.7k 0.00% Reduced -259.5k -259,521
50 Robinswood Financial LLC 0.01% of their portfolio KIRKLAND, WA 19,00019.0k $34.6k $34.6k 0.01% New
51 Summit Asset Management, LLC 0.01% of their portfolio MEMPHIS, TN 18,70018.7k $34.0k $34.0k 0.01% Unchanged
52 BARCLAYS PLC 0.00% of their portfolio LONDON, X0 18,54118.5k $33.7k $33.7k 0.00% New
53 WELLS FARGO & COMPANY/MN 0.00% of their portfolio SAN FRANCISCO, CA 18,04718.0k $32.8k $32.8k 0.00% Added +17.6k +17,553
54 PNC Financial Services Group, Inc. 0.00% of their portfolio Pittsburgh, PA 18,00018.0k $32.8k $32.8k 0.00% Unchanged
55 Investors Research Corp 0.01% of their portfolio ATLANTA, GA 17,95017.9k $32.7k $32.7k 0.01% Unchanged
56 UBS Group AG 0.00% of their portfolio ZURICH, V8 16,73016.7k $30.4k $30.4k 0.00% Reduced -5.0k -4,951
57 GOLDMAN SACHS GROUP INC 0.00% of their portfolio NEW YORK, NY 15,67815.7k $28.5k $28.5k 0.00% Reduced -332.3k -332,271
58 Quadrature Capital Ltd 0.00% of their portfolio LONDON, X0 13,74413.7k $24.4k $24.4k 0.00% New
59 CITIGROUP INC 0.00% of their portfolio NEW YORK, NY 11,95512.0k $21.8k $21.8k 0.00% Reduced -241.0k -241,037
60 Tower Research Capital LLC (TRC) 0.00% of their portfolio NEW YORK, NY 11,92811.9k $21.7k $21.7k 0.00% Reduced -2.1k -2,123
61 GROUP ONE TRADING LLC 0.00% of their portfolio CHICAGO, IL 11,49511.5k $20.9k $20.9k 0.00% Added +2.6k +2,594
62 RAYMOND JAMES & ASSOCIATES 0.00% of their portfolio ST PETERSBURG, FL 10,35010.3k $18.8k $18.8k 0.00% New
63 Roble, Belko & Company, Inc 0.00% of their portfolio SEWICKLEY, PA 10,00010.0k $18.0k $18.0k 0.00% Unchanged
64 CHOREO, LLC 0.00% of their portfolio ROCKFORD, IL 10,00010.0k $17.7k $17.7k 0.00% Unchanged
65 Legal & General Group Plc 0.00% of their portfolio London, X0 5,9556.0k $10.6k $10.6k 0.00% New
66 Ameritas Investment Partners, Inc. 0.00% of their portfolio LINCOLN, NE 5,3705.4k $9.8k $9.8k 0.00% New
67 CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio WEST SACRAMENTO, CA 3,9724.0k $7.2k $7.2k 0.00% New
68 OSAIC HOLDINGS, INC. 0.00% of their portfolio SCOTTSDALE, AZ 3,7003.7k $6.7k $6.7k 0.00% Added +750 +750
69 AMALGAMATED BANK 0.00% of their portfolio NEW YORK, NY 1,8971.9k $3.0k $3.0k 0.00% New
70 CIBC Private Wealth Group LLC 0.00% of their portfolio ATLANTA, GA 300300 $537 $537 0.00% Unchanged
71 Aspire Private Capital, LLC 0.00% of their portfolio Cornelius, NC 200200 $364 $364 0.00% Unchanged
72 Avior Wealth Management, LLC 0.00% of their portfolio OMAHA, NE 5050 $91 $91 0.00% New
73 INNEALTA CAPITAL, LLC 0.00% of their portfolio AUSTIN, TX 2323 $42 $42 0.00% New
74 CONCOURSE FINANCIAL GROUP SECURITIES, INC. 0.00% of their portfolio BIRMINGHAM, AL 00 $0 $0 0.00% Unchanged