TNDM
TANDEM DIABETES CARE INC
$15.36
+2.13%
$1.0B
No data for this timeframe.
Vol
Market Cap$1.0B
Cap SizeSmall Cap
Analyst ConsensusBuy (59%)
Inst. Holders8 funds
Inst. Value$281.0M
Inst. Activity3 buys / 1 sells
Insider Activity0B / 2S
Insider Net $-$4.4K
SEC Reports2
Exchange Nasdaq·Sector Surgical & Medical Instruments & Apparatus·Inc. DE·CIK 0001438133·Prev Close $15.04
Recent Activity
May 20, 2026
short_volume
Short Volume: TNDM — 66.7% short (0.4M / 0.6M)
Short: 410,962 | Exempt: 0 | TRF Vol: 615,962 | Short Ratio: 66.7% | Off-exchange volume (dark pool
May 15, 2026
SEC
Tandem Diabetes terminated EVP and Chief Commercial Officer Mark Novara without cause, effective May 18, 2026. The compa
8-K — Impact 3/10
May 15, 2026
Insider
Sheridan John F sold 5,472 shares
PRESIDENT & CEO @ $0.00 ($0.00)
May 15, 2026
Insider
Sheridan John F sold 2,785 shares
PRESIDENT & CEO @ $12.82 ($35.7K)
May 15, 2026
Insider
Sheridan John F sold 1,336 shares
PRESIDENT & CEO @ $10.90 ($14.6K)
Apr 7, 2026
SEC
Tandem Diabetes Care filed a definitive additional proxy statement (DEFA14A) for an upcoming shareholder meeting. The do
DEFA14A — Impact 3/10
Inst.
MORGAN STANLEY — DOUBLED
2,080,497 shares ($45.7M)
Inst.
WELLS FARGO & COMPANY/MN — ADD
84,411 shares ($1.9M)
Price Targets
$30.52
+98.7% upside
Strong Buy
Current $15.36
Low $20.00
Median $28.00
High $55.00
21 analysts
$20.00
$55.00
Analyst Ratings
6Strong Buy
11Buy
12Hold
0Sell
0Strong Sell
Recent Analyst Actions
| Date | Firm | Action | Rating |
|---|---|---|---|
| May 18, 2026 | B of A Securities | MAINTAIN | Neutral → Neutral |
| May 12, 2026 | Benchmark | INITIATE | Hold |
| May 11, 2026 | Truist Securities | REITERATE | Buy → Buy |
| May 11, 2026 | Barclays | MAINTAIN | Overweight → Overweight |
| Apr 20, 2026 | TD Cowen | MAINTAIN | Buy → Buy |
Earnings Estimates
| Period | EPS Est. | Range | Growth | # |
|---|---|---|---|---|
| Current Q | $-0.33 ▼ -13.4% | $-0.45 — $-0.23 | 31% YoY | 19 |
| Next Q | $-0.19 ▼ -17.6% | $-0.31 — $-0.01 | 40% YoY | 19 |
| Current FY | $-0.70 ▲ +12.1% | $-0.99 — $-0.41 | 73% YoY | 20 |
| Next FY | $0.05 ▲ +322.9% | $-0.58 — $0.58 | 108% YoY | 20 |
Latest Reports
NEUTRAL
8-K
3/10
Tandem Diabetes terminated EVP and Chief Commercial Officer Mark Novara without cause, effective May 18, 2026. The compa
May 15, 2026
NEUTRAL
DEFA14A
3/10
Tandem Diabetes Care filed a definitive additional proxy statement (DEFA14A) for an upcoming shareholder meeting. The do
Apr 7, 2026
Top Institutional Holders
| Fund | Value | Move |
|---|---|---|
| VANGUARD GROUP INC | $161.4M | — |
| MORGAN STANLEY | $45.7M | DOUBLED |
| TWO SIGMA INVESTMENTS, LP | $26.4M | ADD |
| BANK OF AMERICA CORP | $15.4M | — |
| FMR LLC | $14.8M | ADD |
Recent Insider Trades
| Date | Insider | Type | Value |
|---|---|---|---|
| May 15, 2026 | Sheridan John | M | $0.00 |
| May 15, 2026 | Sheridan John | F | $35.7K |
| May 15, 2026 | Sheridan John | A | $14.6K |
| May 15, 2026 | Sheridan John | M | $0.00 |
| May 15, 2026 | Morrison Susan | A | $14.6K |
8 institutional holders with $281.0M total value (12,783,557 shares) as of 2025-Q4. Top holders: VANGUARD, MORGAN, TWO. Net buying activity: 3 institutions added/increased vs 1 reduced.
Top Institutional Holders — 2025-Q4
| # | Fund | Shares | Value | % of Tracked | Last Move |
|---|---|---|---|---|---|
| 1 | VANGUARD GROUP INC | 7,341,356 | $161.4M | 57.4% | — |
| 2 | MORGAN STANLEY | 2,080,497 | $45.7M | 16.3% | DOUBLED +182.1% |
| 3 | TWO SIGMA INVESTMENTS, LP | 1,201,527 | $26.4M | 9.4% | ADD +92.2% |
| 4 | BANK OF AMERICA CORP /DE/ | 702,503 | $15.4M | 5.5% | — |
| 5 | FMR LLC | 672,647 | $14.8M | 5.3% | ADD +65.8% |
| 6 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 646,310 | $14.2M | 5.1% | NEW |
| 7 | WELLS FARGO & COMPANY/MN | 84,411 | $1.9M | 0.7% | ADD +61.8% |
| 8 | NORGES BANK | 54,306 | $1.2M | 0.4% | NEW |
Recent Position Changes
| Fund | Action | Prev Shares | Curr Shares | Change % | Value | Quarter |
|---|---|---|---|---|---|---|
| MORGAN STANLEY | DOUBLED | 737,547 | 2,080,497 | +182.1% | $45.7M | 2025-Q4 |
| WELLS FARGO & COMPANY/MN | ADD | 52,174 | 84,411 | +61.8% | $1.9M | 2025-Q4 |
| NORGES BANK | NEW | — | 54,306 | — | $1.2M | 2025-Q4 |
| RENAISSANCE TECHNOLOGIES LLC | EXIT | 161,500 | 0 | -100.0% | $0.00 | 2025-Q4 |
| FMR LLC | ADD | 524,675 | 870,123 | +65.8% | $10.6M | 2025-Q3 |
| MORGAN STANLEY | TRIM | 1,265,534 | 737,547 | -41.7% | $9.0M | 2025-Q3 |
| RENAISSANCE TECHNOLOGIES LLC | TRIM | 342,327 | 161,500 | -52.8% | $2.0M | 2025-Q3 |
| MORGAN STANLEY | ADD | 930,969 | 1,265,534 | +35.9% | $23.6M | 2025-Q2 |
| TWO SIGMA INVESTMENTS, LP | ADD | 641,442 | 1,232,727 | +92.2% | $23.0M | 2025-Q2 |
| FMR LLC | TRIM | 1,437,076 | 524,675 | -63.5% | $9.8M | 2025-Q2 |
| WELLS FARGO & COMPANY/MN | TRIM | 166,910 | 50,281 | -69.9% | $937.2K | 2025-Q2 |
| FMR LLC | ADD | 1,086,842 | 1,437,076 | +32.2% | $27.5M | 2025-Q1 |
| TWO SIGMA INVESTMENTS, LP | TRIM | 861,188 | 641,442 | -25.5% | $12.3M | 2025-Q1 |
| WELLS FARGO & COMPANY/MN | DOUBLED | 61,255 | 166,910 | +172.5% | $3.2M | 2025-Q1 |
| RENAISSANCE TECHNOLOGIES LLC | ADD | 210,427 | 315,727 | +50.0% | $11.4M | 2024-Q4 |
| CITADEL ADVISORS LLC | TRIM | 445,623 | 235,726 | -47.1% | $8.5M | 2024-Q4 |
| WELLS FARGO & COMPANY/MN | ADD | 45,092 | 61,255 | +35.8% | $2.2M | 2024-Q4 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | NEW | — | 586,063 | — | $24.9M | 2024-Q3 |
8 unique insiders with 2 transactions. Net insider value: -$4.4K ($0.00 bought, $4.4K sold).
Insider Transactions
| Date | Insider | Title | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| May 15, 2026 | Sheridan John F | PRESIDENT & CEO | M | 5,472 | $0.00 | $0.00 |
| May 15, 2026 | Sheridan John F | PRESIDENT & CEO | F | 2,785 | $12.82 | $35.7K |
| May 15, 2026 | Sheridan John F | PRESIDENT & CEO | A | 1,336 | $10.90 | $14.6K |
| May 15, 2026 | Sheridan John F | PRESIDENT & CEO | M | 5,472 | $0.00 | $0.00 |
| May 15, 2026 | Morrison Susan | EVP & Chief Admin. Officer | A | 1,336 | $10.90 | $14.6K |
| May 15, 2026 | Morrison Susan | EVP & Chief Admin. Officer | M | 1,503 | $0.00 | $0.00 |
| May 15, 2026 | Morrison Susan | EVP & Chief Admin. Officer | M | 1,503 | $0.00 | $0.00 |
| May 15, 2026 | Morrison Susan | EVP & Chief Admin. Officer | F | 430 | $12.82 | $5.5K |
| May 15, 2026 | Kyrillos Jean-Claude | EVP & Chief Operating Officer | M | 4,038 | $0.00 | $0.00 |
| May 15, 2026 | Kyrillos Jean-Claude | EVP & Chief Operating Officer | F | 2,139 | $12.82 | $27.4K |
| May 15, 2026 | Kyrillos Jean-Claude | EVP & Chief Operating Officer | A | 434 | $10.90 | $4.7K |
| May 15, 2026 | Kyrillos Jean-Claude | EVP & Chief Operating Officer | M | 4,038 | $0.00 | $0.00 |
| May 15, 2026 | Hansen Shannon Marie | EVP & Chief Legal Officer | M | 1,437 | $0.00 | $0.00 |
| May 15, 2026 | Hansen Shannon Marie | EVP & Chief Legal Officer | M | 1,437 | $0.00 | $0.00 |
| May 15, 2026 | Hansen Shannon Marie | EVP & Chief Legal Officer | F | 732 | $12.82 | $9.4K |
| May 15, 2026 | Hansen Shannon Marie | EVP & Chief Legal Officer | A | 1,886 | $10.90 | $20.6K |
| May 15, 2026 | Gasser Elizabeth Anne | EVP, Chief Strategy Officer | M | 1,503 | $0.00 | $0.00 |
| May 15, 2026 | Gasser Elizabeth Anne | EVP, Chief Strategy Officer | F | 807 | $12.82 | $10.3K |
| May 15, 2026 | Gasser Elizabeth Anne | EVP, Chief Strategy Officer | A | 1,337 | $10.90 | $14.6K |
| May 15, 2026 | Gasser Elizabeth Anne | EVP, Chief Strategy Officer | M | 1,503 | $0.00 | $0.00 |
| May 15, 2026 | Carpenter Rick | EVP & Chief Technology Officer | M | 1,437 | $0.00 | $0.00 |
| May 15, 2026 | Carpenter Rick | EVP & Chief Technology Officer | F | 732 | $12.82 | $9.4K |
| May 15, 2026 | Carpenter Rick | EVP & Chief Technology Officer | A | 1,336 | $10.90 | $14.6K |
| May 15, 2026 | Carpenter Rick | EVP & Chief Technology Officer | M | 1,437 | $0.00 | $0.00 |
| May 15, 2026 | Novara Mark David | EVP & CHIEF COMMERCIAL OFFICER | M | 76 | $0.00 | $0.00 |
| May 15, 2026 | Novara Mark David | EVP & CHIEF COMMERCIAL OFFICER | F | 57 | $12.82 | $730.74 |
| May 15, 2026 | Novara Mark David | EVP & CHIEF COMMERCIAL OFFICER | M | 76 | $0.00 | $0.00 |
| May 15, 2026 | Vosseller Leigh | EVP & CHIEF FINANCIAL OFFICER | A | 1,336 | $10.90 | $14.6K |
| May 15, 2026 | Vosseller Leigh | EVP & CHIEF FINANCIAL OFFICER | M | 1,503 | $0.00 | $0.00 |
| May 15, 2026 | Vosseller Leigh | EVP & CHIEF FINANCIAL OFFICER | F | 540 | $12.82 | $6.9K |
| May 15, 2026 | Vosseller Leigh | EVP & CHIEF FINANCIAL OFFICER | M | 1,503 | $0.00 | $0.00 |
| Apr 15, 2026 | Kyrillos Jean-Claude | EVP & Chief Operating Officer | M | 3,636 | $0.00 | $0.00 |
| Apr 15, 2026 | Kyrillos Jean-Claude | EVP & Chief Operating Officer | M | 3,636 | $0.00 | $0.00 |
| Apr 15, 2026 | Kyrillos Jean-Claude | EVP & Chief Operating Officer | F | 1,926 | $20.66 | $39.8K |
| Mar 17, 2026 | Novara Mark David | EVP & CHIEF COMMERCIAL OFFICER | SELL | 187 | $23.05 | $4.3K |
| Mar 16, 2026 | Novara Mark David | EVP & CHIEF COMMERCIAL OFFICER | M | 7,414 | $0.00 | $0.00 |
| Mar 16, 2026 | Novara Mark David | EVP & CHIEF COMMERCIAL OFFICER | M | 7,414 | $0.00 | $0.00 |
| Mar 16, 2026 | Novara Mark David | EVP & CHIEF COMMERCIAL OFFICER | F | 5,540 | $21.59 | $119.6K |
| Mar 5, 2026 | Novara Mark David | EVP & CHIEF COMMERCIAL OFFICER | SELL | 2 | $22.81 | $45.62 |
| Feb 17, 2026 | Vosseller Leigh | EVP & CHIEF FINANCIAL OFFICER | M | 1,503 | $0.00 | $0.00 |
| Feb 17, 2026 | Vosseller Leigh | EVP & CHIEF FINANCIAL OFFICER | F | 619 | $18.95 | $11.7K |
| Feb 17, 2026 | Vosseller Leigh | EVP & CHIEF FINANCIAL OFFICER | M | 1,503 | $0.00 | $0.00 |
2 SEC filing reports analyzed. Sentiment: 0 bullish, 0 bearish, 0 mixed, 2 neutral. Avg impact: 3.0/10.
No press releases analyzed yet. Press releases are collected from GlobeNewsWire and analyzed by the LLM pipeline.
Current analyst consensus: Hold (59% buy). Based on 29 analysts: 6 strong buy, 11 buy, 12 hold, 0 sell, 0 strong sell.
Analyst Price Targets
$30.52 mean target
+98.7% upside
Strong Buy (2.08)
$20.00 Low
$55.00 High
| Metric | Value |
|---|---|
| Current Price | $15.36 |
| Target Low | $20.00 |
| Target Mean | $30.52 |
| Target Median | $28.00 |
| Target High | $55.00 |
| # Analysts | 21 |
| Recommendation | Strong Buy (2.08) |
Earnings Estimates & Revisions
| Period | EPS Avg | EPS Low | EPS High | EPS Growth | 30d Rev. | Up/Down | Rev. Avg | Rev. Growth | Analysts |
|---|---|---|---|---|---|---|---|---|---|
| Current Q 2026-06-30 |
$-0.33 | $-0.45 | $-0.23 | 31.2% | -13.4% | 4↑ 12↓ | $0.3B | 5.9% | 19 |
| Next Q 2026-09-30 |
$-0.19 | $-0.31 | $-0.01 | 39.6% | -17.6% | 3↑ 14↓ | $0.3B | 7.8% | 19 |
| Current FY 2026-12-31 |
$-0.70 | $-0.99 | $-0.41 | 72.9% | +12.1% | 12↑ 5↓ | $1.1B | 5.8% | 20 |
| Next FY 2027-12-31 |
$0.05 | $-0.58 | $0.58 | 107.5% | +322.9% | 9↑ 2↓ | $1.2B | 12.3% | 20 |
Current Quarter EPS Revision History
| Timepoint | EPS Estimate | Change |
|---|---|---|
| Current | $-0.333 | |
| 7d ago | $-0.331 | -0.002 |
| 30d ago | $-0.294 | -0.039 |
| 60d ago | $-0.294 | -0.038 |
| 90d ago | $-0.299 | -0.034 |
16 analyst firms have rated this stock: 5 upgrades, 0 downgrades, 1 initiations.
Individual Analyst Actions
| Date | Analyst Firm | Action | Previous Rating | New Rating |
|---|---|---|---|---|
| May 18, 2026 | B of A Securities | MAINTAIN | Neutral | Neutral |
| May 12, 2026 | Benchmark | INITIATE | — | Hold |
| May 11, 2026 | Truist Securities | REITERATE | Buy | Buy |
| May 11, 2026 | Barclays | MAINTAIN | Overweight | Overweight |
| Apr 20, 2026 | TD Cowen | MAINTAIN | Buy | Buy |
| Apr 9, 2026 | Goldman Sachs | MAINTAIN | Neutral | Neutral |
| Mar 19, 2026 | Truist Securities | UPGRADE | Hold | Buy |
| Mar 17, 2026 | Piper Sandler | UPGRADE | Neutral | Overweight |
| Mar 2, 2026 | Morgan Stanley | MAINTAIN | Equal-Weight | Equal-Weight |
| Feb 23, 2026 | Lake Street | UPGRADE | Hold | Buy |
| Feb 23, 2026 | Truist Securities | REITERATE | Hold | Hold |
| Feb 20, 2026 | Mizuho | MAINTAIN | Neutral | Neutral |
| Feb 20, 2026 | UBS | MAINTAIN | Neutral | Neutral |
| Feb 20, 2026 | Stifel | MAINTAIN | Hold | Hold |
| Feb 20, 2026 | B of A Securities | UPGRADE | Underperform | Neutral |
| Feb 20, 2026 | Piper Sandler | MAINTAIN | Neutral | Neutral |
| Feb 4, 2026 | Stifel | MAINTAIN | Hold | Hold |
| Jan 9, 2026 | Bernstein | MAINTAIN | Market Perform | Market Perform |
| Dec 18, 2025 | Truist Securities | MAINTAIN | Hold | Hold |
| Dec 17, 2025 | Canaccord Genuity | MAINTAIN | Buy | Buy |
| Dec 17, 2025 | Mizuho | MAINTAIN | Neutral | Neutral |
| Dec 16, 2025 | Baird | UPGRADE | Neutral | Outperform |
| Dec 11, 2025 | Citigroup | MAINTAIN | Neutral | Neutral |
| Dec 2, 2025 | Morgan Stanley | MAINTAIN | Equal-Weight | Equal-Weight |
Monthly Consensus History
| Period | Strong Buy | Buy | Hold | Sell | Strong Sell | Buy % | Distribution |
|---|---|---|---|---|---|---|---|
| May 1, 2026 | 6 | 11 | 12 | 0 | 0 | 59% | |
| Apr 1, 2026 | 6 | 11 | 12 | 0 | 0 | 59% | |
| Mar 1, 2026 | 6 | 9 | 15 | 0 | 0 | 50% | |
| Feb 1, 2026 | 6 | 8 | 15 | 1 | 0 | 47% | |
| Jan 1, 2026 | 6 | 8 | 15 | 1 | 0 | 47% |
Strong BuyBuyHoldSellStrong Sell
No congressional trading data available for this ticker. Data is sourced from Senate and House financial disclosure filings.
No Reddit sentiment data available yet. Sentiment is analyzed from Reddit investment communities on a rolling basis.
May 20, 2026
short_volume
Short Volume: TNDM — 66.7% short (0.4M / 0.6M)
Short: 410,962 | Exempt: 0 | TRF Vol: 615,962 | Short Ratio: 66.7% | Off-exchange volume (dark pool + OTC)
May 19, 2026
short_volume
Short Volume: TNDM — 68.2% short (0.6M / 0.8M)
Short: 578,306 | Exempt: 0 | TRF Vol: 847,417 | Short Ratio: 68.2% | Off-exchange volume (dark pool + OTC)
May 18, 2026
short_volume
Short Volume: TNDM — 75.4% short (2.0M / 2.7M)
Short: 2,042,636 | Exempt: 36,305 | TRF Vol: 2,710,544 | Short Ratio: 75.4% | Off-exchange volume (dark pool + OTC)
May 15, 2026
short_volume
Short Volume: TNDM — 64.2% short (1.9M / 2.9M)
Short: 1,862,220 | Exempt: 19,211 | TRF Vol: 2,900,557 | Short Ratio: 64.2% | Off-exchange volume (dark pool + OTC)
May 13, 2026
short_volume
Short Volume: TNDM — 74.5% short (1.0M / 1.4M)
Short: 1,014,641 | Exempt: 270 | TRF Vol: 1,362,812 | Short Ratio: 74.5% | Off-exchange volume (dark pool + OTC)
May 12, 2026
short_volume
Short Volume: TNDM — 68.7% short (0.8M / 1.2M)
Short: 820,826 | Exempt: 0 | TRF Vol: 1,194,351 | Short Ratio: 68.7% | Off-exchange volume (dark pool + OTC)
May 11, 2026
short_volume
Short Volume: TNDM — 63.2% short (1.1M / 1.8M)
Short: 1,123,761 | Exempt: 181,785 | TRF Vol: 1,778,878 | Short Ratio: 63.2% | Off-exchange volume (dark pool + OTC)
May 8, 2026
short_volume
Short Volume: TNDM — 60.1% short (2.4M / 3.9M)
Short: 2,350,257 | Exempt: 70,271 | TRF Vol: 3,908,252 | Short Ratio: 60.1% | Off-exchange volume (dark pool + OTC)
May 7, 2026
earnings_calendar
TNDM Q1 2026 Earnings After Market Close — 2026-05-07
May 6, 2026
short_volume
Short Volume: TNDM — 56.3% short (0.8M / 1.5M)
Short: 819,063 | Exempt: 256,957 | TRF Vol: 1,455,114 | Short Ratio: 56.3% | Off-exchange volume (dark pool + OTC)
May 5, 2026
short_volume
Short Volume: TNDM — 60.5% short (0.6M / 0.9M)
Short: 560,606 | Exempt: 0 | TRF Vol: 926,492 | Short Ratio: 60.5% | Off-exchange volume (dark pool + OTC)
May 4, 2026
short_volume
Short Volume: TNDM — 64.3% short (0.5M / 0.8M)
Short: 508,842 | Exempt: 1,002 | TRF Vol: 791,664 | Short Ratio: 64.3% | Off-exchange volume (dark pool + OTC)
Apr 27, 2026
short_volume
Short Volume: TNDM — 55.9% short (0.3M / 0.5M)
Short: 292,942 | Exempt: 0 | TRF Vol: 523,839 | Short Ratio: 55.9% | Off-exchange volume (dark pool + OTC)
Apr 23, 2026
short_volume
Short Volume: TNDM — 58.2% short (0.4M / 0.6M)
Short: 358,213 | Exempt: 351 | TRF Vol: 615,727 | Short Ratio: 58.2% | Off-exchange volume (dark pool + OTC)
Apr 21, 2026
short_volume
Short Volume: TNDM — 69.6% short (0.4M / 0.6M)
Short: 398,293 | Exempt: 61,913 | TRF Vol: 571,930 | Short Ratio: 69.6% | Off-exchange volume (dark pool + OTC)