트랜스메딕스 그룹, Inc.
MX ˙ BMV ˙ US89377M1099
SecurityMX:TMDX / TransMedics Group, Inc.
InstitutionSquarepoint Ops LLC
Latest Disclosed Ownership7,274 shares
Latest Disclosed Value $ 723,108
Squarepoint Ops LLC ownership in TMDX / TransMedics Group, Inc.

On May 15, 2026 - Squarepoint Ops LLC filed a 13F-HR form disclosing ownership of 7,274 shares of TransMedics Group, Inc. (MX:TMDX) valued at $723,108 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 110,496 shares of TransMedics Group, Inc.. This represents a change in shares of -93.42% during the quarter.

Squarepoint Ops LLC has a history of taking positions in derivatives of the underlying security (TMDX) in the form of stock options. The firm currently holds call options representing 0 of underlying shares valued at $0 USD and put options representing 0 of underlying shares valued at $0 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

MX:TMDX / TransMedics Group, Inc. Historical Put/Call Ratio
Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F TRANSMEDICS GROUP COM 89377M109 7,274 -103,222 -93.42 723 -94.62 0.0008
2026-02-13 2025-12-31 13F TRANSMEDICS GROUP COM 89377M109 110,496 -22,008 -16.61 13,442 -9.59 0.0143
2025-11-14 2025-09-30 13F TRANSMEDICS GROUP COM 89377M109 132,504 125,197 1,713.38 14,867 1,418.49 0.0149
2025-08-27 2025-06-30 13F/A-1 TRANSMEDICS GROUP COM 89377M109 7,307 -61,802 -89.43 979 -78.94 0.0010
2025-08-14 2025-06-30 13F TRANSMEDICS GROUP COM 89377M109 7,307 -61,802 979 0.0010
2025-08-27 2025-03-31 13F/A-1 TRANSMEDICS GROUP COM 89377M109 69,109 -113,705 -62.20 4,650 -59.21 0.0056
2025-05-15 2025-03-31 13F TRANSMEDICS GROUP COM 89377M109 69,109 -113,705 4,650 0.0056
2025-02-14 2024-12-31 13F TRANSMEDICS GROUP COM 89377M109 182,814 -43,846 -19.34 11,398 -67.97 0.0112
2024-11-14 2024-09-30 13F TRANSMEDICS GROUP COM 89377M109 226,660 209,589 1,227.75 35,586 1,284.09 0.0557
2024-08-14 2024-06-30 13F TRANSMEDICS GROUP COM 89377M109 17,071 -26,174 -60.52 2,571 -19.58 0.0042
2024-05-15 2024-03-31 13F TRANSMEDICS GROUP COM 89377M109 43,245 27,244 170.26 3,198 153.33 0.0055
2024-02-14 2023-12-31 13F TRANSMEDICS GROUP COM 89377M109 16,001 16,001 1,263 0.0024
2023-11-14 2023-09-30 13F TRANSMEDICS GROUP COM 89377M109 0 -27,208 -100.00 0 -100.00
2023-08-14 2023-06-30 13F TRANSMEDICS GROUP COM 89377M109 27,208 18,380 208.20 2,285 241.92 0.0070
2023-05-15 2023-03-31 13F TRANSMEDICS GROUP COM 89377M109 8,828 -12,285 -58.19 669 -48.73 0.0027
2023-02-14 2022-12-31 13F TRANSMEDICS GROUP COM 89377M109 21,113 2,650 14.35 1,303 69.00 0.0051
2022-11-14 2022-09-30 13F TRANSMEDICS GROUP COM 89377M109 18,463 11,320 158.48 771 242.67 0.0039
2022-08-15 2022-06-30 13F TRANSMEDICS GROUP COM 89377M109 7,143 7,143 225 0.0013
2022-05-16 2022-03-31 13F TRANSMEDICS GROUP COM 89377M109 0 -41,356 -100.00 0 -100.00
2022-02-14 2021-12-31 13F TRANSMEDICS GROUP COM 89377M109 41,356 6,319 18.04 792 -31.67 0.0021
2021-11-15 2021-09-30 13F TRANSMEDICS GROUP COM 89377M109 35,037 14,094 67.30 1,159 66.76 0.0033
2021-08-16 2021-06-30 13F TRANSMEDICS GROUP COM 89377M109 20,943 11,818 129.51 695 83.38 0.0026
2021-05-17 2021-03-31 13F TRANSMEDICS GROUP COM 89377M109 9,125 -8,015 -46.76 379 11.14 0.0022
2021-02-16 2020-12-31 13F TRANSMEDICS GROUP COM 89377M109 17,140 4,440 34.96 341 94.86 0.0025
2020-11-16 2020-09-30 13F TRANSMEDICS GROUP COM 89377M109 12,700 12,700 175 0.0024
2020-05-15 2020-03-31 13F TRANSMEDICS GROUP COM 89377M109 0 -188,650 -100.00 0 -100.00
2020-02-14 2019-12-31 13F TRANSMEDICS GROUP COM 89377M109 188,650 188,650 3,586 0.0213
2019-11-14 2019-09-30 13F TRANSMEDICS GROUP COM 89377M109 0 -13,599 -100.00 0 -100.00
2019-08-14 2019-06-30 13F TRANSMEDICS GROUP COM 89377M109 13,599 13,599 394 0.0038
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-02-13 2025-12-31 13F TRANSMEDICS GROUP COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2025-11-14 2025-09-30 13F TRANSMEDICS GROUP COM Call 5,700 21.28 640 1.59 n/a n/a n/a
2025-08-27 2025-06-30 13F/A TRANSMEDICS GROUP COM Call 4,700 -32.86 630 33.83 n/a n/a n/a
2025-08-14 2025-06-30 13F TRANSMEDICS GROUP COM Call 4,700 630 n/a n/a n/a
2025-08-27 2025-03-31 13F/A TRANSMEDICS GROUP COM Call 7,000 471 n/a n/a n/a
2025-05-15 2025-03-31 13F TRANSMEDICS GROUP COM Call 7,000 471 n/a n/a n/a
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-02-13 2025-12-31 13F TRANSMEDICS GROUP COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2025-11-14 2025-09-30 13F TRANSMEDICS GROUP COM Put 6,500 -64.29 729 -70.10 n/a n/a n/a
2025-08-27 2025-06-30 13F/A TRANSMEDICS GROUP COM Put 18,200 -25.10 2,439 49.20 n/a n/a n/a
2025-08-14 2025-06-30 13F TRANSMEDICS GROUP COM Put 18,200 2,439 n/a n/a n/a
2025-08-27 2025-03-31 13F/A TRANSMEDICS GROUP COM Put 24,300 1,635 n/a n/a n/a
2025-05-15 2025-03-31 13F TRANSMEDICS GROUP COM Put 24,300 1,635 n/a n/a n/a
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.