SSKN vs PTIX

Comparison between STRATA Skin Sciences Inc (SSKN, Company) and Protagenic Therapeutics Inc (PTIX, Company).

Both SSKN and PTIX are from the Healthcare sector.

5-Year PerformanceSSKN has outperformed PTIX, delivering a return of -61.8% compared to -71.0%

SSKN vs PTIX - Performance Comparison

Log

Key Characteristics

Financial metrics and valuation ratios

Metric	SSKN(COMPANY)	PTIX(COMPANY)
Market Cap	$712K	$696K
Max Drawdown	100.00%	99.98%
Sharpe Ratio	-0.68	-0.44
Industry	Medical Devices	Biotechnology
P/E Ratio	-0.08	-0.07
Forward P/E	188.68	N/A
5Y EPS CAGR	1.95%	9.80%
Debt to Equity	527.82%	0.00%

Market Cap

Winner

SSKN

$712K

PTIX

$696K

Max Drawdown

SSKN

100.00%

Winner

PTIX

99.98%

Sharpe Ratio

SSKN

-0.68

Winner

PTIX

-0.44

Industry

SSKN

Medical Devices

PTIX

Biotechnology

P/E Ratio

Winner

SSKN

-0.08

PTIX

-0.07

Forward P/E

SSKN

188.68

PTIX

N/A

5Y EPS CAGR

SSKN

1.95%

Winner

PTIX

9.80%

Debt to Equity

SSKN

527.82%

Winner

PTIX

0.00%

SSKN vs PTIX - Historical Returns

Returns include dividend reinvestment.

Period	SSKN	PTIX
1 month	-13.42%	-34.08%
3 months	-47.64%	-52.01%
6 months	-89.35%	-72.84%
1 year	-94.40%	-90.70%
5 years(CAGR)	-61.78%	-71.03%
10 years(CAGR)	-42.37%	-54.11%
Max(CAGR)	-39.23%	-44.56%

Winner

SSKN

-13.42%

PTIX

-34.08%

Winner

SSKN

-47.64%

PTIX

-52.01%

SSKN

-89.35%

Winner

PTIX

-72.84%

SSKN

-94.40%

Winner

PTIX

-90.70%

5Y(CAGR)

Winner

SSKN

-61.78%

PTIX

-71.03%

10Y(CAGR)

Winner

SSKN

-42.37%

PTIX

-54.11%

Max(CAGR)

Winner

SSKN

-39.23%

PTIX

-44.56%

SSKN vs PTIX - Annual Returns (2005 - 2026)

Returns include dividend reinvestment.

Year	SSKN	PTIX
2026	-89.69%	-51.36%
2025	-56.70%	-82.13%
2024	-44.05%	-46.74%
2023	-31.25%	-39.63%
2022	-45.88%	-71.43%
2021	-0.34%	+31.90%
2020	-20.63%	-25.54%
2019	-27.02%	-29.49%
2018	+106.35%	-9.09%
2017	-45.33%	-71.55%
2016	-60.71%	+150.00%
2015	-31.06%	N/A
2014	-81.71%	N/A
2013	-63.43%	N/A
2012	-50.00%	N/A
2011	+10.48%	N/A
2010	-68.46%	N/A
2009	+158.40%	N/A
2008	-25.88%	N/A
2007	-34.92%	N/A
2006	+37.93%	N/A
2005	-30.87%	N/A

SSKN vs PTIX Drawdown Comparison

The maximum drawdown for SSKN was -100.00%, occurring on Apr 15, 2026. This drawdown has not yet recovered.

The maximum drawdown for PTIX was -99.98%, occurring on Feb 17, 2026. This drawdown has not yet recovered.

The current SSKN drawdown is -100.00%. The current PTIX drawdown is -99.98%.

Rank	SSKN	PTIX
#1	-100.00% Jan 14, 2010 - Apr 15, 2026	-99.98% Apr 6, 2016 - Feb 17, 2026
#2	-75.19% Jun 5, 2008 - Aug 24, 2009	-66.67% Jan 29, 2016 - Apr 6, 2016
#3	-53.03% Jun 7, 2006 - May 27, 2008	N/A
#4	-34.75% Nov 16, 2005 - Jun 5, 2006	N/A
#5	-33.85% Oct 28, 2005 - Nov 15, 2005	N/A
#6	-28.72% Oct 27, 2009 - Jan 14, 2010	N/A
#7	-14.57% Sep 10, 2009 - Oct 26, 2009	N/A
#8	-7.66% Aug 27, 2009 - Sep 9, 2009	N/A
#9	-2.58% May 30, 2008 - Jun 5, 2008	N/A