Cardio Diagnostics (CDIOW) Stock: Why It's Up Today
Updated Oct 20, 2026, 4:00 PM ET · closing price
- Closed at $0.01, +33.70% vs the prior close of $0.01.
- Volume 35.21K shares, 0.6x its 50-day average (light).
- No new SEC filings since the prior session.
- No new insider buys or sales reported since the prior session.
Idexx Laboratories (IDXX)Lantheus (LNTH)Intellia Therapeutics (NTLA)Neogen (NEOG)Celldex Therapeutics (CLDX)QuidelOrtho (QDEL)
CDIOW jumps 33.7% to $0.01. Closed at $0.01, +33.70% vs the prior close of $0.01. Day range $0.01–$0.01, opened at $0.02.
CDIOW daily analysis — what happened
A plain-English, data-only note for every US trading day (today's note updates every 2 hours while the market is open). Newest first; older days stay archived below.
Oct 20, 2026 — CDIOW jumps 33.7% to $0.01
- Closed at $0.01, +33.70% vs the prior close of $0.01. Day range $0.01–$0.01, opened at $0.02.
- Volume was 35.21K shares, 0.6x its 50-day average of 60.35K — lighter than usual.
- 52-week range $0.01–$0.01; today's close sits at 100% of that range, at a new 52-week high.
Oct 19, 2026 — CDIOW jumps 92.2% to $0.01 on 31.0x normal volume
- Closed at $0.01, +92.19% vs the prior close of $0.01. Day range $0.01–$0.01, opened at $0.02.
- Volume was 60.35K shares, 31.0x its 50-day average of 1.95K — unusually heavy trading.
- 52-week range $0.01–$0.01; today's close sits at 100% of that range, at a new 52-week high.
CDIOW bull case vs bear case (from the data)
- No clear positive signal in the price trend, filings or insider data right now.
- Annual revenue fell 57.5% in the latest fiscal year (SEC XBRL).
- Latest fiscal-year net income: loss of $6.50M.
- Share count up 67.9% in a year (dilution).
- High volatility: average daily move of 33.7% over 20 sessions.
- Thin trading (under $2M a day on average) can mean wide bid/ask spreads.
CDIOW latest news & SEC filings
Every SEC filing by or about CDIOW in the last 120 days, explained in plain English. Updated daily, with a same-day refresh for new filings.
Oct 2, 2026 · Form 4 — Insider trade
Insider trade report (Form 4) — a director, officer or 10%+ owner changed their holdings
Insider holdings update with no common-stock transactions in the table (often options or derivative awards only).
Oct 2, 2026 · Form 4 — Insider trade
Insider trade report (Form 4) — a director, officer or 10%+ owner changed their holdings
Insider holdings update with no common-stock transactions in the table (often options or derivative awards only).
Oct 2, 2026 · Form 4 — Insider trade
Insider trade report (Form 4) — a director, officer or 10%+ owner changed their holdings
Insider holdings update with no common-stock transactions in the table (often options or derivative awards only).
Oct 2, 2026 · Form 4 — Insider trade
Insider trade report (Form 4) — a director, officer or 10%+ owner changed their holdings
Insider holdings update with no common-stock transactions in the table (often options or derivative awards only).
Sep 18, 2026 · Form 8-K — Major event / current report
Current report — a filing companies must make within 4 business days of a major event
- Item 5.07 — Reported shareholder vote results.
Sep 8, 2026 · Form DEFA14A — Additional proxy materials
Additional proxy materials
Aug 20, 2026 · Form 8-K — Major event / current report
Current report — a filing companies must make within 4 business days of a major event
- Item 7.01 — Released information under Regulation FD (e.g. a presentation or press release).
Aug 7, 2026 · Form 10-Q — Quarterly report
Quarterly report (unaudited financial statements for the quarter)
Quarter ended Jun 30, 2026:
- Revenue: $5.36K (prior year $7.47K) (-28.3% vs Jun 30, 2025)
- Net income: -$1.50M (prior year -$1.68M) (loss narrowed vs Jun 30, 2025)
- Diluted EPS: -$0.51 (prior year -$0.97) (loss narrowed vs Jun 30, 2025)
Aug 7, 2026 · Form DEFA14A — Additional proxy materials
Additional proxy materials
Aug 5, 2026 · Form DEF 14A — Proxy statement
Proxy statement — agenda for the shareholder meeting (board elections, executive pay, votes)
Jul 23, 2026 · Form ARS — Annual report to shareholders
Annual report to shareholders
Jul 13, 2026 · Form PRE 14A — Preliminary proxy statement
Preliminary proxy statement
Jul 2, 2026 · Form 4 — Insider trade
Insider trade report (Form 4) — a director, officer or 10%+ owner changed their holdings
Insider holdings update with no common-stock transactions in the table (often options or derivative awards only).
Jul 2, 2026 · Form 4 — Insider trade
Insider trade report (Form 4) — a director, officer or 10%+ owner changed their holdings
Insider holdings update with no common-stock transactions in the table (often options or derivative awards only).
Things to know before you trade CDIOW
- How much it moves: over the last 20 sessions the average daily move was 33.70% (largest 33.7%). That is a volatile stock.
- Liquidity: about 47.78K shares (≈$588) trade per day on average. Thin volume can mean wider bid/ask spreads.
- 52-week position: $0.01 vs a range of $0.01–$0.01 (100% of the range).
- Dividends: no cash dividends in the last 2 years.
- Splits: none in the last 2 years.
- Insider trades (Form 4, last 12 months, recent 25 shown): 0 open-market buys, 0 sales.
- Latest filings: 8-K Sep 18, 2026; 8-K Aug 20, 2026; 10-Q Aug 7, 2026.
- Share count: 2.96M shares outstanding (Aug 7, 2026), +67.9% vs a year earlier — notable dilution.
- Listing: Nasdaq · industry: In Vitro & In Vivo Diagnostic Substances.
CDIOW market data (last 20 sessions)
| Date | Open | High | Low | Close | Volume |
|---|---|---|---|---|---|
| Oct 20, 2026 | 0.02 | 0.01 | 0.01 | 0.01 | 35.21K |
| Oct 19, 2026 | 0.02 | 0.01 | 0.01 | 0.01 | 60.35K |
About Cardio Diagnostics
Cardio Diagnostics (CDIOW) is listed on the Nasdaq and classified by the SEC under “In Vitro & In Vivo Diagnostic Substances”. Its business address is in CHICAGO, IL. State of incorporation: DE. Fiscal year ends December 31. SEC CIK 1870144.
CDIOW board of directors & executives
From SEC Form 3/4/5 insider filings made in the last 12 months (date = latest filing).
Directors
| Name | Role | Latest filing |
|---|---|---|
| Wendy J Betts | Director | Jul 2, 2026 |
| Paul Frederick Burton | Director | Jul 2, 2026 |
| Peter K Fung | Director | Jul 2, 2026 |
| James Intrater | Director | Jul 2, 2026 |
Executive officers
| Name | Title | Latest filing |
|---|---|---|
| No Form 3/4/5 filings by this group in the last 12 months. | ||
Recent insider buys & sales
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| No open-market insider buys or sales reported in the last 12 months. | ||||
CDIOW financials (annual, from XBRL filings)
| Fiscal year end | Revenue | Net income | Diluted EPS | Operating cash flow |
|---|---|---|---|---|
| Dec 31, 2025 | $14.82K | $-6.50M | -3.71 | $-5.73M |
| Dec 31, 2024 | $34.89K | $-8.38M | -9.35 | $-4.99M |
| Dec 31, 2023 | $17.07K | $-8.38M | -0.66 | $-5.67M |
| Dec 31, 2022 | $950 | $-4.66M | -1.51 | $-5.09M |
| Dec 31, 2021 | $901 | $-620.45K | -0.53 | $-585.29K |
Latest balance sheet: total assets $7.93M, total liabilities $499.78K, cash $0 (as of Jun 30, 2026).
CDIOW earnings / results-day log
| Date | Filing | Close that day |
|---|---|---|
| No 8-K earnings releases in recent filings. | ||
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Information only, not investment advice. BuyMeWhiskey is not a registered investment adviser or broker-dealer; nothing here is a recommendation to buy, sell or hold any security, and there are no price targets. Data comes from SEC EDGAR filings and public end-of-day market data and may be delayed or contain errors. Verify with the company's filings before making decisions. Prices: end-of-day data as of Oct 20, 2026, 4:00 PM ET. Filings: SEC EDGAR. Refreshed every 2 hours during US market hours.