TRANSMEDICS GROUP INC TMDX
COM · Common Stock · CUSIP 89377M109 · ISIN US89377M1099
- SectorHealth care
- IndustryElectromedical & Electrotherapeutic Apparatus
- HeadquartersAndover, MA
- 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 ($284.9k this quarter). Holder counts are more reliable. Shares outstanding: 32.6m 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 ≈ $54.79. Options: 12 managers hold calls ($33.9m notional), 10 hold puts ($10.9m).
Trends to Q3 2023
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 179 |
| Q4 2022 | 200 |
| Q1 2023 | 224 |
| Q2 2023 | 241 |
| Q3 2023 | 224 |
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 | 108 | 76 |
| Q1 2023 | 121 | 93 |
| Q2 2023 | 148 | 90 |
| Q3 2023 | 126 | 119 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q4 2022 | $19.5m | $7.8m | 0.40 |
| Q1 2023 | $35.6m | $18.6m | 0.52 |
| Q2 2023 | $17.3m | $12.6m | 0.73 |
| Q3 2023 | $33.9m | $10.9m | 0.32 |
Biggest buyers
| FMR LLC | Added | +1.4m |
| EVENTIDE ASSET MANAGEMENT, LLC | Added | +857.9k |
| ArrowMark Colorado Holdings LLC | Added | +622.9k |
| MARSHALL WACE, LLP | New | +577.2k |
| Bank of New York Mellon Corp | Added | +363.0k |
| AMERICAN CENTURY COMPANIES INC | Added | +355.8k |
| CREDIT SUISSE AG/ | Added | +344.6k |
| BRAIDWELL LP | New | +307.2k |
| First Light Asset Management, LLC | Added | +240.6k |
| Eagle Health Investments LP | Added | +182.2k |
Biggest sellers
| LORD, ABBETT & CO. LLC | Reduced | -2.4m |
| SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC | Sold out | -671.7k |
| D. E. Shaw & Co., Inc. | Sold out | -322.0k |
| Divisadero Street Capital Management, LP | Reduced | -266.9k |
| Iron Triangle Partners LP | Sold out | -180.0k |
| DIMENSIONAL FUND ADVISORS LP | Reduced | -171.5k |
| Driehaus Capital Management LLC | Reduced | -161.3k |
| CASTLEARK MANAGEMENT LLC | Sold out | -132.5k |
| Ophir Asset Management Pty Ltd | Reduced | -122.6k |
| Russell Investments Group, Ltd. | Reduced | -99.4k |
Biggest calls
| SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC | New | $16.4m299.6k shares |
| JANE STREET GROUP, LLC | Added | $3.3m60.0k shares |
| Walleye Trading LLC | Added | $2.9m52.9k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $2.8m52.0k shares |
| CITADEL ADVISORS LLC | Added | $2.6m47.6k shares |
| SIMPLEX TRADING, LLC | Added | $2.1m38.3k shares |
| MILLENNIUM MANAGEMENT LLC | Added | $1.6m30.0k shares |
| GROUP ONE TRADING LLC | Reduced | $1.3m23.6k shares |
| Walleye Capital LLC | Added | $416.1k7.6k shares |
| WOLVERINE TRADING, LLC | New | $235.4k4.3k shares |
Biggest puts
| WOLVERINE ASSET MANAGEMENT LLC | Added | $3.9m70.9k shares |
| MILLENNIUM MANAGEMENT LLC | New | $3.4m61.2k shares |
| JANE STREET GROUP, LLC | Added | $1.5m27.3k shares |
| CITADEL ADVISORS LLC | Added | $1.1m20.9k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $750.1k13.7k shares |
| SIMPLEX TRADING, LLC | Added | $175.0k3.2k shares |
| GROUP ONE TRADING LLC | Added | $93.1k1.7k shares |
| Walleye Trading LLC | Reduced | $32.9k600 shares |
| Walleye Capital LLC | Reduced | $5.5k100 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 |
|---|---|
| FMR LLC 13G · institution +2.1 pts · filed 2025-05-12 | 15.0% |
| BlackRock, Inc. 13G · institution filed 2025-07-18 | 14.6% |
| VANGUARD PORTFOLIO MANAGEMENT LLC 13G · institution new · filed 2026-04-29 | 5.7% |
| VANGUARD CAPITAL MANAGEMENT LLC 13G · institution new · filed 2026-04-30 | 5.1% |
Fell to 5% or below in the last year: VANGUARD GROUP INC (0.0%, 2026-03-27; now reported by VANGUARD PORTFOLIO MANAGEMENT LLC)
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 | 1 | $2.3m | 1 | $101.6k | — |
| Q1 2022 | 0 | — | 1 | $112.5k | — |
| Q2 2022 | 0 | — | 2 | $1.9m | — |
| Q3 2022 | 0 | — | 5 | $12.4m | — |
| Q4 2022 | 0 | — | 8 | $7.5m | — |
| Q1 2023 | 0 | — | 7 | $12.8m | — |
| Q2 2023 | 0 | — | 3 | $3.4m | — |
| Q3 2023 | 1 | $155.0k | 3 | $3.0m | — |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2023-09-01 | Hassanein Waleed H President & CEO, director | Sold | $511.9k7.5k shares |
| 2023-08-31 | Provost Miriam VP, Global Regulatory Affairs | Sold | $180.1k2.7k shares |
| 2023-08-29 | Weill David Director | Bought | $155.0k2.5k shares |
| 2023-08-01 | Hassanein Waleed H President & CEO, director | Sold | $697.9k7.5k shares |
| 2023-07-18 | Khayal Tamer I Chief Commercial Officer | Sold | $476.9k5.0k shares |
| 2023-07-13 | Khayal Tamer I Chief Commercial Officer | Sold | $267.8k3.0k shares |
| 2023-07-13 | Khayal Tamer I Chief Commercial Officer | Sold | $200.3k2.2k shares |
| 2023-07-03 | Hassanein Waleed H President & CEO, director | Sold | $618.8k7.5k 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 |
|---|---|---|
| FMR LLC 0.02% of their portfolio | 4.7m $258.1m | Added +1.4m |
| BlackRock Inc. 0.00% of their portfolio | 2.4m $134.1m | Added +139.9k |
| VANGUARD GROUP INC 0.00% of their portfolio | 1.8m $99.3m | Added +29.8k |
| MACQUARIE GROUP LTD 0.12% of their portfolio | 1.7m $93.7m | Added +16.7k |
| FRED ALGER MANAGEMENT, LLC 0.50% of their portfolio | 1.6m $86.2m | Reduced -74.9k |
| LORD, ABBETT & CO. LLC 0.14% of their portfolio | 1.3m $73.7m | Reduced -2.4m |
| Allspring Global Investments Holdings, LLC 0.12% of their portfolio | 1.3m $69.6m | Reduced -22.8k |
| Invesco Ltd. 0.02% of their portfolio | 1.3m $68.6m | Reduced -25.9k |
| CREDIT SUISSE AG/ 0.06% of their portfolio | 1.1m $62.0m | Added +344.6k |
| Driehaus Capital Management LLC 0.71% of their portfolio | 1.0m $54.8m | Reduced -161.3k |
| EVENTIDE ASSET MANAGEMENT, LLC 0.91% of their portfolio | 925.4k $50.7m | Added +857.9k |
| STATE STREET CORP 0.00% of their portfolio | 786.8k $43.1m | Added +5.7k |
| Bank of New York Mellon Corp 0.01% of their portfolio | 760.1k $41.6m | Added +363.0k |
| ArrowMark Colorado Holdings LLC 0.50% of their portfolio | 743.0k $40.7m | Added +622.9k |
| Sandhill Capital Partners LLC 3.75% of their portfolio | 732.6k $40.1m | Reduced -80.2k |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 665.9k $36.5m | Added +23.3k |
| First Light Asset Management, LLC 3.21% of their portfolio | 618.1k $33.8m | Added +240.6k |
| MARSHALL WACE, LLP 0.07% of their portfolio | 577.2k $31.6m | New |
| Bellevue Group AG 0.47% of their portfolio | 536.7k $29.4m | Reduced -75.9k |
| MORGAN STANLEY 0.00% of their portfolio | 513.8k $28.1m | Reduced -77.5k |
| AMERICAN CENTURY COMPANIES INC 0.02% of their portfolio | 487.0k $26.7m | Added +355.8k |
| NEXT CENTURY GROWTH INVESTORS LLC 2.84% of their portfolio | 477.5k $26.1m | Added +34.5k |
| EMERALD ADVISERS, LLC 1.17% of their portfolio | 442.5k $24.2m | Added +6.5k |
| Eagle Health Investments LP 5.00% of their portfolio | 414.2k $22.7m | Added +182.2k |
| Nicholas Investment Partners, LP 1.69% of their portfolio | 413.7k $22.7m | Added +46.1k |
| SEI INVESTMENTS CO 0.04% of their portfolio | 386.1k $21.1m | Added +58.3k |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 358.3k $19.6m | Added +40.5k |
| EMERALD MUTUAL FUND ADVISERS TRUST 1.18% of their portfolio | 356.7k $19.5m | Added +2.3k |
| BAILLIE GIFFORD & CO 0.02% of their portfolio | 338.2k $18.5m | Added +96.6k |
| NORTHERN TRUST CORP 0.00% of their portfolio | 337.2k $18.5m | Added +3.3k |
| BRAIDWELL LP 0.53% of their portfolio | 307.2k $16.8m | New |
| Ophir Asset Management Pty Ltd 3.82% of their portfolio | 295.8k $16.2m | Reduced -122.6k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio | 249.2k $13.6m | Added +8.2k |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC 0.05% of their portfolio | 198.5k $10.9m | Added +136.9k |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 195.1k $10.7m | Added +11.6k |
| Ensign Peak Advisors, Inc 0.02% of their portfolio | 183.9k $10.1m | Added +94.3k |
| BARCLAYS PLC 0.01% of their portfolio | 182.6k $10.0m | Added +31.1k |
| DEUTSCHE BANK AG\ 0.01% of their portfolio | 163.2k $8.9m | Added +27.5k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 162.2k $8.9m | Added +1.2k |
| OBERWEIS ASSET MANAGEMENT INC/ 0.88% of their portfolio | 151.1k $8.3m | Added +24.1k |
| ROYCE & ASSOCIATES LP 0.08% of their portfolio | 141.7k $7.8m | Added +4.2k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 141.7k $7.8m | Added +30.5k |
| AXA S.A. 0.03% of their portfolio | 138.3k $7.6m | Reduced -4.5k |
| AMERIPRISE FINANCIAL INC 0.00% of their portfolio | 135.7k $7.4m | Reduced -22.4k |
| Granahan Investment Management, LLC 0.26% of their portfolio | 133.9k $7.3m | Added +14.2k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 121.2k $6.6m | Added +105.3k |
| CITADEL ADVISORS LLC 0.01% of their portfolio | 111.6k $6.1m | Added +101.9k |
| KORNITZER CAPITAL MANAGEMENT INC /KS 0.13% of their portfolio | 111.3k $6.1m | Unchanged |
| Kent Lake Capital LLC 2.13% of their portfolio | 100.0k $5.5m | Reduced -19.1k |
| Walleye Capital LLC 0.08% of their portfolio | 96.1k $5.3m | New |
| Must Asset Management Inc. 12.65% of their portfolio | 94.2k $5.2m | New |
| Ziegler Capital Management, LLC 0.21% of their portfolio | 93.8k $5.1m | Reduced -12.3k |
| JANE STREET GROUP, LLC 0.01% of their portfolio | 93.4k $5.1m | Added +59.7k |
| BANK OF MONTREAL /CAN/ 0.00% of their portfolio | 88.3k $5.5m | Added +15.3k |
| PUTNAM INVESTMENTS LLC 0.01% of their portfolio | 87.2k $4.8m | Reduced -8.0k |
| PEREGRINE CAPITAL MANAGEMENT LLC 0.14% of their portfolio | 85.8k $4.7m | Reduced -24.6k |
| Nuveen Asset Management, LLC 0.00% of their portfolio | 84.6k $4.6m | Reduced -514 |
| Qube Research & Technologies Ltd 0.01% of their portfolio | 84.5k $4.6m | Added +20.1k |
| ENVESTNET ASSET MANAGEMENT INC 0.00% of their portfolio | 80.8k $4.4m | Added +41.2k |
| Jump Financial, LLC 0.16% of their portfolio | 76.8k $4.2m | Added +46.6k |
| DIMENSIONAL FUND ADVISORS LP 0.00% of their portfolio | 74.3k $4.1m | Reduced -171.5k |
| LAZARD ASSET MANAGEMENT LLC 0.01% of their portfolio | 73.7k $4.0m | Added +73.2k |
| Swiss National Bank 0.00% of their portfolio | 71.6k $3.9m | Added +700 |
| Bullseye Asset Management LLC 2.15% of their portfolio | 70.5k $3.9m | Reduced -12.5k |
| NEW YORK STATE COMMON RETIREMENT FUND 0.00% of their portfolio | 61.7k $3.4m | Reduced -4.2k |
| Divisadero Street Capital Management, LP 1.00% of their portfolio | 58.1k $3.2m | Reduced -266.9k |
| SEGALL BRYANT & HAMILL, LLC 0.04% of their portfolio | 57.6k $3.2m | New |
| FIRST TRUST ADVISORS LP 0.00% of their portfolio | 52.9k $2.9m | Reduced -38.7k |
| ADVISORY RESEARCH INC 0.40% of their portfolio | 52.4k $2.9m | Reduced -21.2k |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio | 52.3k $2.9m | Added +12.4k |
| Cubist Systematic Strategies, LLC 0.03% of their portfolio | 50.3k $2.8m | Reduced -9.2k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio | 47.1k $2.6m | Added +6.0k |
| RHUMBLINE ADVISERS 0.00% of their portfolio | 46.6k $2.6m | Added +1.1k |
| AXIOM INVESTORS LLC /DE 0.04% of their portfolio | 45.7k $2.5m | Added +4.3k |
| TUDOR INVESTMENT CORP ET AL 0.03% of their portfolio | 38.8k $2.1m | New |
| State of New Jersey Common Pension Fund D 0.01% of their portfolio | 38.2k $2.1m | Added +5.3k |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 37.5k $2.1m | Unchanged |
| OSTERWEIS CAPITAL MANAGEMENT INC 0.15% of their portfolio | 36.2k $2.0m | Reduced -8.0k |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio | 35.8k $2.0m | Reduced -3.4k |
| Quantbot Technologies LP 0.13% of their portfolio | 35.5k $1.9m | Added +11.4k |
| HSBC HOLDINGS PLC 0.00% of their portfolio | 35.0k $1.9m | New |
| Connor, Clark & Lunn Investment Management Ltd. 0.01% of their portfolio | 32.2k $1.8m | Reduced -5.5k |
| Liontrust Investment Partners LLP 0.03% of their portfolio | 31.7k $1.7m | New |
| BANK OF HAWAII 0.10% of their portfolio | 31.0k $1.7m | Added +5.8k |
| Legal & General Group Plc 0.00% of their portfolio | 30.8k $1.7m | Added +970 |
| NATIXIS 0.01% of their portfolio | 29.8k $1.6m | Reduced -4.7k |
| Aquatic Capital Management LLC 0.07% of their portfolio | 28.6k $1.6m | New |
| ROYAL BANK OF CANADA 0.00% of their portfolio | 26.4k $1.4m | Added +3.2k |
| RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio | 25.3k $1.4m | Reduced -47.5k |
| BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio | 24.9k $1.4m | Reduced -74.3k |
| UBS Group AG 0.00% of their portfolio | 24.0k $1.3m | Added +20.9k |
| Harel Insurance Investments & Financial Services Ltd. 0.03% of their portfolio | 23.0k $1.3m | Added +15.2k |
| Lagoda Investment Management, L.P. 0.83% of their portfolio | 22.9k $1.3m | Added +19.4k |
| OSAIC HOLDINGS, INC. 0.00% of their portfolio | 22.9k $1.3m | Reduced -38.0k |
| LPL Financial LLC 0.00% of their portfolio | 22.9k $1.3m | Added +2.3k |
| Dana Investment Advisors, Inc. 0.06% of their portfolio | 22.2k $1.2m | Reduced -449 |
| Mariner, LLC 0.00% of their portfolio | 22.1k $1.2m | Reduced -6.9k |
| Moody Aldrich Partners LLC 0.23% of their portfolio | 22.0k $1.2m | Reduced -5.8k |
| ABN AMRO INVESTMENT SOLUTIONS 0.02% of their portfolio | 21.4k $1.2m | Added +12.8k |
| Executive Wealth Management, LLC 0.12% of their portfolio | 21.2k $1.2m | Added +6.7k |