마지막으로 Diabetes Care, Inc.
MX ˙ BMV ˙ US8753722037
SecurityMX:TNDM / Tandem Diabetes Care, Inc.
InstitutionXTX Topco Ltd
Latest Disclosed Ownership60,821 shares
Latest Disclosed Value $ 1,165,939
XTX Topco Ltd ownership in TNDM / Tandem Diabetes Care, Inc.

On May 15, 2026 - XTX Topco Ltd filed a 13F-HR form disclosing ownership of 60,821 shares of Tandem Diabetes Care, Inc. (MX:TNDM) valued at $1,165,939 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 0 shares of Tandem Diabetes Care, Inc..

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.

Upgrade to unlock premium data and export to Excel .

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 60,821 60,821 1,166 0.0203
2026-02-17 2025-12-31 13F TANDEM DIABETES CARE COM NEW 875372203 0 -73,545 -100.00 0 -100.00
2025-11-14 2025-09-30 13F TANDEM DIABETES CARE COM NEW 875372203 73,545 54,752 291.34 893 154.86 0.0463
2025-08-12 2025-06-30 13F TANDEM DIABETES CARE COM NEW 875372203 18,793 18,793 350 0.0145
2025-05-08 2025-03-31 13F TANDEM DIABETES CARE COM NEW 875372203 0 -7,490 -100.00 0 -100.00
2025-02-13 2024-12-31 13F TANDEM DIABETES CARE COM NEW 875372203 7,490 2,273 43.57 270 21.72 0.0222
2024-11-14 2024-09-30 13F TANDEM DIABETES CARE COM NEW 875372203 5,217 -5,550 -51.55 221 -48.96 0.0160
2024-08-12 2024-06-30 13F TANDEM DIABETES CARE COM NEW 875372203 10,767 3,072 39.92 434 59.19 0.0371
2024-05-13 2024-03-31 13F TANDEM DIABETES CARE COM NEW 875372203 7,695 7,695 272 0.0367
2024-02-13 2023-12-31 13F TANDEM DIABETES CARE COM NEW 875372203 0 -25,521 -100.00 0 -100.00
2023-11-13 2023-09-30 13F TANDEM DIABETES CARE COM NEW 875372203 25,521 -16,518 -39.29 530 -48.59 0.0905
2023-08-14 2023-06-30 13F TANDEM DIABETES CARE COM NEW 875372203 42,039 42,039 1,032 0.1849
2022-02-11 2021-12-31 13F TANDEM DIABETES CARE COM NEW 875372203 0 -2,232 -100.00 0 -100.00
2021-11-12 2021-09-30 13F TANDEM DIABETES CARE COM NEW 875372203 2,232 -619 -21.71 266 -4.32 0.0893
2021-08-12 2021-06-30 13F TANDEM DIABETES CARE COM NEW 875372203 2,851 2,851 278 0.0937
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.