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Greenwich LifeSciences, Inc. (GLSI)

Healthcare | Biotechnology | Stafford, United States | NasdaqCM
15.67 USD -3.06 (-16.337%) ⇩ (Aug. 28, 2026, 4 p.m. EDT)
After hours: 16.21 +0.54 (3.426%) ⇧ (Aug. 28, 2026, 7:57 p.m. EDT)

Short-term:★★⯪☆☆Long-term:★☆☆☆☆Dividends:☆☆☆☆☆
Hot Take | Aug. 22, 2026, 6:07 a.m. EDT

The immediate outlook is neutral-to-slightly-bearish despite a recent price bounce, as the stock remains trapped below its 50-day moving average and carries heavy short interest. While the last two weeks saw a rally pushing the price back toward the 50-day line, the broader technical structure remains broken, with the asset trading significantly below its 200-day average. The statistical forecast offers no directional bias, reinforcing the lack of a clear short-term catalyst. From a long-term perspective, the investment case is severely compromised by deteriorating fundamentals and a brutal multi-year price trajectory. The business is burning cash, with negative free cash flow and operating cash flow, while returning negative equity to shareholders. The price history tells a stark story of destruction: a nearly 70% drop over the last four years, capped by a single year of decline at the end of the window. This sustained downward trend suggests the market has permanently reassessed the company's value, rendering any 'value' arguments moot. With no dividend to provide income and a balance sheet showing significant impairment, the security lacks the core pillars required for a long-term hold.

Model Selection — Backtest MAE (log-scale, lower is better)
ModelMAE
AutoETS ✓0.326860
AutoARIMA0.326862
MSTL0.338583
AutoTheta0.344108

Forecast horizon: 45 days | Selected: AutoETS

Forecast Reliability
Score 32%
H-stat 9.58
Ljung-Box p 0.000
Jarque-Bera p 0.213
Excess Kurtosis -1.24
Attribute Value
Sector Healthcare
Market Cap 230,007,520
Forward P/E -19.11
Beta 1.45
Website https://greenwichlifesciences.com

Info Dump

Attribute Value
52 Week Change 0.63438046
Address1 Building 14
Address2 3,992 Bluebonnet Dr.
All Time High 158.07
All Time Low 3.262
Ask 18.4
Ask Size 2
Audit Risk 10
Average Daily Volume10 Day 119,970
Average Daily Volume3 Month 155,583
Average Volume 155,583
Average Volume10Days 119,970
Beta 1.452
Bid 13.54
Bid Size 2
Board Risk 10
Book Value 0.359
City Stafford
Compensation As Of Epoch Date 1,767,139,200
Compensation Risk 10
Country United States
Crypto Tradeable 0
Currency USD
Current Price 15.67
Current Ratio 1.541
Custom Price Alert Confidence HIGH
Date Short Interest 1,786,665,600
Day High 18.94
Day Low 14.25
Display Name Greenwich LifeSciences
Earnings Timestamp End 1,794,513,600
Earnings Timestamp Start 1,794,513,600
Ebitda -22,656,362
Ebitda Margins 0.0
Enterprise To Ebitda -9.76
Enterprise Value 221,131,168
Eps Forward -0.82
Eps Trailing Twelve Months -1.33
Esg Populated 0
Exchange NCM
Exchange Data Delayed By 0
Exchange Timezone Name America/New_York
Exchange Timezone Short Name EDT
Fifty Day Average 17.6081
Fifty Day Average Change -1.9381008
Fifty Day Average Change Percent -0.1100687
Fifty Two Week Change Percent 63.438046
Fifty Two Week High 34.1
Fifty Two Week High Change -18.429998
Fifty Two Week High Change Percent -0.54046917
Fifty Two Week Low 7.78
Fifty Two Week Low Change 7.89
Fifty Two Week Low Change Percent 1.0141388
Fifty Two Week Range 7.78 - 34.1
Financial Currency USD
First Trade Date Milliseconds 1,601,040,600,000
Float Shares 7,645,732
Forward Eps -0.82
Forward P E -19.109756
Free Cashflow -3,343,123
Full Exchange Name NasdaqCM
Fullday Change -3.06
Fullday Change Percent -16.3374
Fullday Price 16.2068
Gmt Off Set Milliseconds -14,400,000
Governance Epoch Date 1,785,542,400
Gross Margins 0.0
Has Pre Post Market Data 1
Held Percent Insiders 0.47911
Held Percent Institutions 0.12245
Implied Shares Outstanding 14,678,208
Industry Biotechnology
Industry Disp Biotechnology
Industry Key biotechnology
Is Earnings Date Estimate 1
Language en-US
Last Fiscal Year End 1,767,139,200
Long Business Summary Greenwich LifeSciences, Inc., a clinical-stage biopharmaceutical company, develops novel cancer immunotherapies for breast cancer and other HER2/neu-expressing cancers in the United States. Its lead product candidate is GP2, a HER2/neu transmembrane peptide, which is in Phase III clinical trial to prevent breast cancer recurrences in patients. The company also develops FLAMINGO-01, which is in Phase IIb and 3 Phase I clinical trial designed to evaluate the safety and efficacy of GLSI-100 in HER2 positive breast cancer patients. Greenwich LifeSciences, Inc. was formerly known as Norwell, Inc. and changed its name to Greenwich LifeSciences, Inc. in March 2018. The company was incorporated in 2006 and is headquartered in Stafford, Texas.
Long Name Greenwich LifeSciences, Inc.
Market us_market
Market Cap 230,007,520
Market State CLOSED
Max Age 86,400
Message Board Id finmb_653283398
Most Recent Quarter 1,782,777,600
Net Income To Common -22,470,610
Next Fiscal Year End 1,798,675,200
Non Diluted Market Cap 274,482,489
Number Of Analyst Opinions 2
Open 18.49
Operating Cashflow -12,488,140
Operating Margins 0.0
Overall Risk 10
Payout Ratio 0.0
Phone 832-819-3232
Post Market Change 0.5368004
Post Market Change Percent 3.4256566
Post Market Price 16.2068
Post Market Time 1,787,961,425
Previous Close 18.73
Price Hint 2
Price To Book 43.649025
Profit Margins 0.0
Quick Ratio 1.541
Quote Source Name Nasdaq Real Time Price
Quote Type EQUITY
Recommendation Key none
Region US
Regular Market Change -3.06
Regular Market Change Percent -16.3374
Regular Market Day High 18.94
Regular Market Day Low 14.25
Regular Market Day Range 14.25 - 18.94
Regular Market Open 18.49
Regular Market Previous Close 18.73
Regular Market Price 15.67
Regular Market Time 1,787,947,201
Regular Market Volume 370,105
Return On Assets -2.35984
Return On Equity -9.86321
Sand P52 Week Change 0.20504117
Sector Healthcare
Sector Disp Healthcare
Sector Key healthcare
Share Holder Rights Risk 3
Shares Outstanding 14,678,208
Shares Percent Shares Out 0.1086
Shares Short 1,593,720
Shares Short Previous Month Date 1,784,073,600
Shares Short Prior Month 1,467,739
Short Name Greenwich LifeSciences, Inc.
Short Percent Of Float 0.2082
Short Ratio 9.68
Source Interval 15
State TX
Symbol GLSI
Target High Price 69.0
Target Low Price 45.0
Target Mean Price 57.0
Target Median Price 57.0
Total Cash 8,876,353
Total Cash Per Share 0.605
Total Debt 0
Tradeable 0
Trailing Annual Dividend Rate 0.0
Trailing Annual Dividend Yield 0.0
Trailing Eps -1.33
Trailing Peg Ratio None
Triggerable 1
Two Hundred Day Average 20.89975
Two Hundred Day Average Change -5.2297497
Two Hundred Day Average Change Percent -0.25023025
Type Disp Equity
Volume 370,105
Website https://greenwichlifesciences.com
Zip 77,477