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Tandem Diabetes Care Inc (TNDM) — chart, structure and Closelooknet read

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Company snapshot — Tandem Diabetes Care Inc

TNDM in five paragraphs: what it makes and sells, where it sits in the Closelooknet stack, who it is priced against, why we track it, what we watch. Research diary, not advice.

What it does
Tandem Diabetes Care designs and sells insulin delivery systems for people with diabetes, built around its t:slim X2 pump and the newer Tandem Mobi wearable pump. It also sells the disposable cartridges and infusion sets these pumps use, plus software such as Tandem Source that lets patients and clinicians review therapy data. It works with the University of Virginia on closed-loop insulin delivery and is based in San Diego.
Where it sits in the stack
Tandem sits outside our Rubin index, which tracks the AI build-out; it belongs to the medical device sleeve of our wider equity universe, where it is a maker of connected insulin pumps rather than a supplier to compute infrastructure.
Who it is priced against
The diary has no peer group on file for Tandem; the comparison the market draws most often is with Insulet, the other maker of wearable insulin pumps.
Why Closelooknet tracks it
Tandem holds a seat in the Russell 1000 but carries no Rubin or Halo seat and no Closelooknet score yet; the diary has not quoted it in any edition so far.
What the diary watches
Whether analyst upgrades on the stock translate into a recovery from its recent lows, given how far the shares still sit below their prior highs.

Tandem Diabetes Care Inc (TNDM) trades on US exchanges.

Written from the company’s public profile and Closelooknet’s own readings, 2026-09-17. Descriptive, refreshed with the registry; corrections welcome via the imprint. closelook.net is an investment research diary — market structure, index membership and scores are our own readings, not investment advice. Related: index compare · sector dispersion · scanner.

Signals for this name

Every Closelooknet reading that exists for TNDM, from the same nightly bakes the boards use. Research diary readings, not advice.

The Street on this name 1 analyst action on the wire · latest: initiation by William Blair, 2026-08-21

The Street on this name

Analyst actions and the latest print for TNDM from the Closelooknet wires — third-party opinions on the record, not our readings.

  • Initiation William Blair — at Outperform Initiated to Outperform 2026-08-21

1 action on the analyst wire since 2026-08-13: 1 initiation. Analyst wire → · Earnings wire →

Who it is priced against Medical Devices · United States · 8 names with week and year-to-date

Peer group

Medical Devices · United States

This name carries no Closelooknet score, so its cohort ranks on trend state — distance to the 50- and 200-day averages — never on a score it does not have.

Compared against TNDM on the nightly bakes; the Peers tab ranks the cohort on the Closelooknet scores where it exists.

How it trades on rate days beta 0.70 to TLT · on the worst bond days it fell more than the market

How it trades on rate days

How TNDM has moved when long-dated Treasury yields rise — measured against TLT, the 20+ year Treasury fund.

  • Beta to long bonds, 1 year 0.70 — shows only a loose link to bond moves for every 1% move in TLT (20+ year Treasuries), Tandem Diabetes Care Inc moved 0.70% on average · correlation 0.08 · higher than 70% of US names
  • Beta, last 3 months 1.24 more rate-sensitive lately than over the year
  • On the 10 worst bond days −2.58% on average against −0.74% for the S&P 500 the 10 sessions of the past year in which TLT fell most, i.e. long yields rose most
  • Latest of those days −7.08% TLT −1.29% that day 2026-09-24

Daily total returns from the adjusted price series; a TLT down day is a day long yields rose. Beta = the average move of the name for a 1% move in TLT. Past sensitivity, not a forecast. An investment diary, not a recommendation.

Weather around the name 3 macro readings: Money Temperature, Factor regime, Sovereign pressure

The weather around this name

Macro readings that apply by membership — the regime, the factor tape, the sector cell, the funding backdrop.

  • Money Temperature Composite 62/100 · S&P 500 fund at 67, bullish alignedEight instruments scored on position, momentum, volume, volatility and fragility — the regime every name trades inside. Temperature lab → 2026-09-25
  • Factor regime Momentum leading — risk appetite buildingMomentum against low volatility (SPMO / SPLV): above its 50-day trend, 99th percentile of the window, +8.4% over 20 sessions. Factor regime → 2026-09-25
  • Sovereign pressure Index 0.61 · up 0.29 over 21 sessionsG7 long-end yields, 10s30s and the slope — the funding weather for every balance sheet on this site. Sovereign pressure → 2026-09-25

FAQ · from the current data · as of 2026-09-26

Quick answers

What is Tandem Diabetes Care Inc (TNDM)?

Tandem Diabetes Care Inc trades as TNDM on the US exchange (United States) in the Closelooknet research universe, as of the registry build of 2026-09-26.

Is TNDM in a Closelooknet index?

Not currently — Tandem Diabetes Care Inc is tracked in the Closelooknet research universe but is not a constituent of a Closelooknet functional index as of 2026-09-26.

Where does TNDM trade against its moving averages?

Mixed moving-average stack: Trades -19.8% vs the 50-day and -19.6% vs the 200-day average, 47% below the 52-week high and +37.2% off the 52-week low; a golden cross printed 3 sessions ago. Computed from daily closes. As of 2026-09-25 — a technical state from the nightly Closelooknet bake, not advice. The Technical tab carries the full row.

What does Tandem Diabetes Care Inc do?

Tandem Diabetes Care designs and sells insulin delivery systems for people with diabetes, built around its t:slim X2 pump and the newer Tandem Mobi wearable pump. It also sells the disposable cartridges and infusion sets these pumps use, plus software such as Tandem Source that lets patients and clinicians review therapy data. It works with the University of Virginia on closed-loop insulin delivery and is based in San Diego. The diary has no peer group on file for Tandem; the comparison the market draws most often is with Insulet, the other maker of wearable insulin pumps.

Where does Tandem Diabetes Care Inc sit in the AI build-out?

Tandem sits outside our Rubin index, which tracks the AI build-out; it belongs to the medical device sleeve of our wider equity universe, where it is a maker of connected insulin pumps rather than a supplier to compute infrastructure. Tandem holds a seat in the Russell 1000 but carries no Rubin or Halo seat and no Closelooknet score yet; the diary has not quoted it in any edition so far.

How does Tandem Diabetes Care Inc trade when bond yields rise?

Over the past year Tandem Diabetes Care Inc had a beta of 0.70 to TLT, the long-dated Treasury fund — it shows only a loose link to bond moves, higher than 70% of US names. On the 10 sessions in which long bonds fell most it moved −2.58% on average, against −0.74% for the S&P 500. The "How it trades on rate days" block on this page carries the lines.

What has Wall Street done on Tandem Diabetes Care Inc recently?

The most recent analyst action on Tandem Diabetes Care Inc on the Closelooknet wire is a initiation by William Blair on 2026-08-21 (at Outperform). 1 action on the analyst wire since 2026-08-13: 1 initiation. Analyst actions are third-party opinions recorded by the wire, not Closelooknet readings. The “The Street on this name” block on this page lists the moves; the full feeds are the analyst wire and the earnings wire.

What does this page show?

A live price chart with SMA overlays and drawing tools for TNDM, performance metrics, index-membership context and the Closelooknet structure read — an investment research diary view, not investment advice.

Related in the Closelooknet universe

then Medical Devices. Scored names rank on their Closelooknet score; names without one rank on trend state — above or below their 50- and 200-day averages — never on a score they do not carry.