Equity · Healthcare
TNDM
NASDAQTandem Diabetes Care (TNDM)
The line runs 23.44 USD on 11 August through 16.91 USD on 6 November, on a scale from 15.0 to 25.0. Days the market did not trade hold the previous close, flat.
- Market cap
- 1.2B USD
- Revenue, year to Dec 2025
- 1.0B USD
- EPS, diluted, year to Dec 2025
- −3.04 USD
- 52-week range
- 13 USD – 26.91 USD
- Avg volume
- 161.3K
- Mentions, 30 days
- 1
as of Nov 6, 2026
Have Tandem Diabetes Care (TNDM) insiders bought or sold shares recently?
In the 90 days to 9 Nov 2026, Tandem Diabetes Care insiders reported 1 open-market sale and no purchases (SEC Form 4); the filings we hold, back to 17 Feb 2026, show no open-market purchase.
Form 4, 90 days to 9 Nov 2026, newest reported trade 27 Oct 2026
Buys 0Sells 1Net sold $33KOther filings 17
| Reported | Insider | Type | Shares | Value |
|---|---|---|---|---|
| 27 Oct 2026 | TWOMEY CHRISTOPHER JDirector | Sell | 1,700 | 33K USD |
17 other filings in the window: grants, exercises, tax withholding and transfers, not trades
| Reported | Insider | Type | Shares | Value |
|---|---|---|---|---|
| 27 Oct 2026 | TWOMEY CHRISTOPHER JDirector | Option exercise | 1,700 | 32K USD |
| 15 Oct 2026 | Kyrillos Jean-ClaudeEVP & Chief Operating Officer | Option exercise | 3,637 | |
| 15 Oct 2026 | Kyrillos Jean-ClaudeEVP & Chief Operating Officer | Tax withheld | 1,926 | 32K USD |
| 15 Aug 2026 | Carpenter RickEVP & Chief Technology Officer | Option exercise | 2,507 | |
| 15 Aug 2026 | Carpenter RickEVP & Chief Technology Officer | Tax withheld | 1,277 | 29K USD |
| 15 Aug 2026 | Gasser Elizabeth AnneEVP, Chief Strategy Officer | Option exercise | 3,014 | |
| 15 Aug 2026 | Gasser Elizabeth AnneEVP, Chief Strategy Officer | Tax withheld | 1,618 | 37K USD |
| 15 Aug 2026 | Hansen Shannon MarieEVP & Chief Legal Officer | Option exercise | 3,014 | |
| 15 Aug 2026 | Hansen Shannon MarieEVP & Chief Legal Officer | Tax withheld | 1,535 | 35K USD |
| 15 Aug 2026 | Kyrillos Jean-ClaudeEVP & Chief Operating Officer | Option exercise | 1,010 | |
| 15 Aug 2026 | Kyrillos Jean-ClaudeEVP & Chief Operating Officer | Tax withheld | 535 | 12K USD |
| 15 Aug 2026 | Morrison SusanEVP & Chief Admin. Officer | Option exercise | 2,827 |
Showing the 12 most recent of 17 compensation filings in this window. The figures above count all of them.
Which funds hold Tandem Diabetes Care (TNDM)?
8 of the 45 institutional funds we track reported a Tandem Diabetes Care position for the quarter ended 30 Jun 2026 — a combined 88.2M USD; the latest of those filings landed 02 Sep 2026.
| Fund | Position | Shares | Value | Shares q/q |
|---|---|---|---|---|
| Citadel Advisors | Held (±25%) | 1,735,879 | 26.2M USD | −20.8% |
| Millennium Management | Added | 1,311,739 | 19.8M USD | +72.2% |
| D. E. Shaw & Co. | Held (±25%) | 681,808 | 10.3M USD | −13.0% |
| Point72 Asset Management | Added | 610,903 | 9.2M USD | +45.3% |
| Two Sigma Investments | Trimmed | 558,409 | 8.4M USD | −70.0% |
| AQR Capital Management | Added | 533,837 | 8.1M USD | +60.8% |
| Tudor Investment Corp | Added | 362,708 | 5.5M USD | +359.1% |
| Man Group | New position | 50,977 | 769K USD | |
| Marshall Wace | Exited | |||
| Renaissance Technologies | Exited |
Have members of Congress traded Tandem Diabetes Care (TNDM)?
The most recent congressional trade disclosed in Tandem Diabetes Care is a purchase by Gilbert Ray Cisneros, Jr. (house, CA), dated 29 Sep 2026.
STOCK Act disclosures
| Traded | Member | Type | Amount | Filed after |
|---|---|---|---|---|
| 29 Sep 2026 | Gilbert Ray Cisneros, Jr.house · Democrat–CA | Purchase | 1K USD–15K USD | 13 days |
| 03 Mar 2026 | Gilbert Ray Cisneros, Jr.house · Democrat–CA | Purchase | 1K USD–15K USD | 35 days |
| 22 Sep 2025 | Josh Gottheimerhouse · Democrat–NJ | Purchase | 1K USD–15K USD | 23 days |
| 19 Mar 2025 | Josh Gottheimerhouse · Democrat–NJ | Sale | 1K USD–15K USD | 22 days |
| 04 Mar 2025 | Gilbert Ray Cisneros, Jr.house · Democrat–CA | Purchase | 1K USD–15K USD | 34 days |
| 05 Aug 2024 | Josh Gottheimerhouse · Democrat–NJ | Purchase | 1K USD–15K USD | 37 days |
| 12 Jul 2023 | Daniel S. Goldmanhouse · Democrat–NY | Sale | 1K USD–15K USD | 32 days |
What has been filed or recorded for Tandem Diabetes Care (TNDM)?
The filings we hold for Tandem Diabetes Care, newest first: 4 fails-to-deliver days, 6 quarterly earnings reports, 2 annual reports and 5 reported financial figures, the latest dated 14 Oct 2026. No next earnings date is announced in SEC filings yet.
| And | ||||
|---|---|---|---|---|
| 14 Oct 2026 | Fails to deliver | Shares failed to deliver | 19,965 shares | 332K USD notional · 0.029% of shares out |
| 09 Oct 2026 | Fails to deliver | Shares failed to deliver | 22,161 shares | 347K USD notional · 0.032% of shares out |
| 05 Oct 2026 | Fails to deliver | Shares failed to deliver | 7,103 shares | 117K USD notional · 0.010% of shares out |
| 30 Sep 2026 | Quarterly earnings | Q3 2026 reported | EPS −0.10 USD | Revenue $284M |
| 30 Sep 2026 | Financials | Total assets | 1.2B USD | at period end |
| 30 Sep 2026 | Financials | Total equity | 135.1M USD | at period end |
| 29 Sep 2026 | Fails to deliver | Shares failed to deliver | 16,403 shares | 269K USD notional · 0.024% of shares out |
| 30 Jun 2026 | Quarterly earnings | Q2 2026 reported | EPS −0.31 USD | Revenue $255M |
| 31 Mar 2026 | Quarterly earnings | Q1 2026 reported | EPS −0.30 USD | Revenue $247M |
| 31 Dec 2025 | Annual report | FY 2025 reported | EPS −0.01 USD | Revenue $290M |
| 31 Dec 2025 | Financials | Revenue | 1.0B USD | fiscal year |
| 31 Dec 2025 | Financials | Net income | −204.7M USD | fiscal year |
| 31 Dec 2025 | Financials | Diluted EPS | −3.04 USD | fiscal year |
| 30 Sep 2025 | Quarterly earnings | Q3 2025 reported | EPS −0.31 USD | Revenue $249M |
| 30 Jun 2025 | Quarterly earnings | Q2 2025 reported | EPS −0.78 USD | Revenue $241M |
| 31 Mar 2025 | Quarterly earnings | Q1 2025 reported | EPS −1.97 USD | Revenue $234M |
| 31 Dec 2024 | Annual report | FY 2024 reported | EPS 0.01 USD | Revenue $283M |
What is Reddit saying about Tandem Diabetes Care (TNDM)?
Reddit mentioned TNDM 1 times in the 30 days to 9 November 2026, in 1 of the communities we track. All of them were scored for sentiment: 0% read bullish, 100% bearish and 0% neither. Reddit data updated 9 November 2026.
30-day window, Method
Mentions, 30 days 1Communities 1
How do Reddit mentions of Tandem Diabetes Care (TNDM) compare with its price?
Share ↗
Where Tandem Diabetes Care (TNDM) is discussed
30 days
| Community | Share | Mentions | Net sentiment |
|---|---|---|---|
| r/wallstreetbets | 100% | 1 | −0.41 |
Tandem Diabetes Care (TNDM): frequently asked questions
What did Tandem Diabetes Care shares close at?
Tandem Diabetes Care closed at 16.91 USD on 6 Nov 2026, down 5.64% on the close before. That is the end-of-day price from Finazon, not a live quote.
What is Tandem Diabetes Care’s market cap?
Tandem Diabetes Care is worth 1.2B USD by market value as of 6 Nov 2026, which is the share price times the shares on issue from its SEC filings.
What is Tandem Diabetes Care’s revenue?
Tandem Diabetes Care reported revenue of 1.0B USD for the year ended 31 Dec 2025, as filed with the SEC. See Filings
Have Tandem Diabetes Care insiders bought or sold shares recently?
In the 90 days to 9 Nov 2026, Tandem Diabetes Care insiders reported 1 open-market sale and no purchases (SEC Form 4); the filings we hold, back to 17 Feb 2026, show no open-market purchase. A further 17 filings were grants, awards, gifts or exercises rather than open-market trades. See Insiders
Which funds own Tandem Diabetes Care?
8 of the 45 funds we track reported a Tandem Diabetes Care position for the quarter ended 30 Jun 2026, per their SEC Form 13F filings. The largest reported positions were Citadel Advisors, Millennium Management and D. E. Shaw & Co. See Funds
Have members of Congress traded Tandem Diabetes Care?
Yes. 7 trades in Tandem Diabetes Care appear in the congressional disclosures we hold; the latest is a purchase by Gilbert Ray Cisneros, Jr. (House, CA) dated 29 Sep 2026, filed 12 Oct 2026. Amounts are disclosed as ranges, and a filing can follow the trade by up to 45 days. See Congress
When did Tandem Diabetes Care last report earnings?
Tandem Diabetes Care last reported earnings on 30 Sep 2026 for Q3 2026, with EPS of −0.10 USD; no next date is announced in SEC filings yet. See Filings
What is Reddit saying about Tandem Diabetes Care?
Tandem Diabetes Care was mentioned 0 times in the last 7 days across the finance subreddits we track, and 1 times over the trailing 30 days. Of the 1 mentions scored for sentiment, 0% read bullish and 100% bearish. That is a social signal, not investment advice. See Reddit
Answers are generated from the live figures on this page — Reddit crowd data, SEC filings and open company records — and update as the data does.
References
- Finazonprior-day close, indicative (IEX-derived, not the official close), some closes dollar-rounded at the source
- TradingViewthe price chart widget, drawn by TradingView from their own data
- RedditReddit ingest across the tracked finance subreddits
- SEC EDGARForm 4 filings (insider transactions)
- SEC EDGAR13F filings
- House disclosuresU.S. House of Representatives financial disclosures
- SECSEC fails-to-deliver (CNS) data
- SEC EDGARXBRL company facts, latest period ended 30 Sep 2026
- SEC EDGARreported earnings figures and scheduled report dates
- SEC EDGARValuation computed from SEC EDGAR filings