Tandem Diabetes Care, Inc.
MX ˙ BMV ˙ US8753722037
SecurityMX:TNDM / Tandem Diabetes Care, Inc.
InstitutionPoint72 Asset Management, L.P.
ManagerSteven Cohen
Latest Disclosed Ownership420,478 shares
Latest Disclosed Value $ 8,060,563
Point72 Asset Management, L.P. ownership in TNDM / Tandem Diabetes Care, Inc.

On May 15, 2026 - Point72 Asset Management, L.P. filed a 13F-HR form disclosing ownership of 420,478 shares of Tandem Diabetes Care, Inc. (MX:TNDM) valued at $8,060,563 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on July 21, 2025 disclosing 0 shares of Tandem Diabetes Care, Inc..

Point72 Asset Management, L.P. has a history of taking positions in derivatives of the underlying security (TNDM) in the form of stock options.

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:TNDM / Tandem Diabetes Care, 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 TANDEM DIABETES CARE COM NEW 875372203 420,478 420,478 8,061 0.0103
2025-07-21 2025-03-31 13F/A-1 TANDEM DIABETES CARE COM NEW 875372203 0 -495,311 -100.00 0 -100.00
2025-05-15 2025-03-31 13F TANDEM DIABETES CARE COM NEW 875372203 0 0
2025-02-14 2024-12-31 13F TANDEM DIABETES CARE COM NEW 875372203 495,311 254,605 105.77 17,841 74.77 0.0393
2024-11-14 2024-09-30 13F TANDEM DIABETES CARE COM NEW 875372203 240,706 240,706 10,208 0.0259
2024-09-16 2024-06-30 13F/A-2 TANDEM DIABETES CARE COM NEW 875372203 0 -35,000 -100.00 0 -100.00
2024-08-19 2024-06-30 13F/A-1 TANDEM DIABETES CARE COM NEW 875372203 0 0
2024-08-14 2024-06-30 13F TANDEM DIABETES CARE COM NEW 875372203 0 0
2024-05-15 2024-03-31 13F TANDEM DIABETES CARE COM NEW 875372203 35,000 -955,336 -96.47 1,239 -95.77 0.0030
2024-02-14 2023-12-31 13F TANDEM DIABETES CARE COM NEW 875372203 990,336 989,028 75,613.76 29,294 108,396.30 0.0708
2023-11-14 2023-09-30 13F TANDEM DIABETES CARE COM NEW 875372203 1,308 1,308 27 0.0001
2023-05-15 2023-03-31 13F TANDEM DIABETES CARE COM NEW 875372203 0 -359,605 -100.00 0 -100.00
2023-05-15 2022-12-31 13F/A-1 TANDEM DIABETES CARE COM NEW 875372203 359,605 276,867 334.63 16,164 308.28 0.0549
2023-02-14 2022-12-31 13F TANDEM DIABETES CARE COM NEW 875372203 359,605 276,867 16,164 0.0549
2022-11-14 2022-09-30 13F TANDEM DIABETES CARE COM NEW 875372203 82,738 82,738 3,959 0.0158
2022-08-15 2022-06-30 13F TANDEM DIABETES CARE COM NEW 875372203 0 -571,669 -100.00 0 -100.00
2022-05-16 2022-03-31 13F TANDEM DIABETES CARE COM NEW 875372203 571,669 437,000 324.50 66,479 227.97 0.2639
2022-02-14 2021-12-31 13F TANDEM DIABETES CARE COM NEW 875372203 134,669 -221,998 -62.24 20,270 -52.39 0.0809
2021-11-15 2021-09-30 13F TANDEM DIABETES CARE COM NEW 875372203 356,667 -321,660 -47.42 42,579 -35.55 0.1870
2021-08-16 2021-06-30 13F TANDEM DIABETES CARE COM NEW 875372203 678,327 308,027 83.18 66,069 102.18 0.2969
2021-05-17 2021-03-31 13F TANDEM DIABETES CARE COM NEW 875372203 370,300 370,300 32,679 0.1527
2021-02-16 2020-12-31 13F TANDEM DIABETES CARE COM NEW 875372203 0 -24,082 -100.00 0 -100.00
2020-11-16 2020-09-30 13F TANDEM DIABETES CARE COM NEW 875372203 24,082 24,082 2,733 0.0140
2020-02-14 2019-12-31 13F TANDEM DIABETES CARE COM NEW 875372203 0 -211,942 -100.00 0 -100.00
2019-11-15 2019-09-30 13F TANDEM DIABETES CARE COM NEW 875372203 211,942 108,315 104.52 12,500 86.96 0.0768
2019-08-14 2019-06-30 13F TANDEM DIABETES CARE COM NEW 875372203 103,627 -18,615 -15.23 6,686 -13.86 0.0350
2019-05-15 2019-03-31 13F TANDEM DIABETES CARE COM NEW 875372203 122,242 -1,083,865 -89.86 7,762 -83.05 0.0352
2019-02-14 2018-12-31 13F TANDEM DIABETES CARE COM NEW 875372203 1,206,107 378,108 45.67 45,796 29.11 0.2236
2018-11-14 2018-09-30 13F TANDEM DIABETES CARE COM NEW 875372203 827,999 -411,601 -33.20 35,471 29.95 0.1463
2018-08-14 2018-06-30 13F TANDEM DIABETES CARE COM NEW 875372203 1,239,600 1,239,600 27,296 0.1089
2017-02-14 2016-12-31 13F TANDEM DIABETES CARE COM 875372104 0 -983,514 -100.00 0 -100.00
2016-11-14 2016-09-30 13F TANDEM DIABETES CARE COM 875372104 983,514 133,514 15.71 7,534 17.55 0.0530
2016-08-15 2016-06-30 13F TANDEM DIABETES CARE COM 875372104 850,000 25,000 3.03 6,409 -10.81 0.0436
2016-05-16 2016-03-31 13F TANDEM DIABETES CARE COM 875372104 825,000 28,244 3.54 7,186 -23.63 0.0551
2016-02-16 2015-12-31 13F TANDEM DIABETES CARE COM 875372104 796,756 -333,745 -29.52 9,410 -5.52 0.0776
2015-11-16 2015-09-30 13F TANDEM DIABETES CARE COM 875372104 1,130,501 -44,499 -3.79 9,960 -21.80 0.0782
2015-08-14 2015-06-30 13F TANDEM DIABETES CARE COM 875372104 1,175,000 774,900 193.68 12,737 152.27 0.0882
2015-05-15 2015-03-31 13F TANDEM DIABETES CARE COM 875372104 400,100 400,100 5,049 0.0344
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
(%)
2026-05-15 2026-03-31 13F TANDEM DIABETES CARE COM NEW Put 90,000 1,725 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.