What is PRTA's relative strength rating?

PRTA ranks at the 66th percentile over 1 month, 39th percentile over 3 months, 52th percentile over 6 months, 54th percentile over 1 year against the full TickerStance CS+ADRC universe of U.S. equities.

What sector is PRTA in?

PRTA is classified under the Healthcare sector within the Pharmaceutical Products industry per the TickerStance sector-classification pipeline, which maps U.S. equities to GICS-aligned sectors using exchange SIC codes and Massive Finance reference data. Healthcare is currently ranked 3 of 11 sectors by relative strength.

Is PRTA in a leading sector?

Yes — Healthcare ranks at the 82th percentile by sector relative strength, placing it in the leading band (≥ 70th percentile). PRTA benefits from positive sector-level momentum, which historically correlates with above-average stock-level RS performance in the O'Neil / Minervini framework.

How volatile is PRTA?

PRTA currently shows a 20-day average daily range (ADR%) of 4.7%, a 90-day beta versus the S&P 500 of 0.65. An ADR% above 4% indicates an intraday swing-trading eligible name in the Minervini Volatility Contraction Pattern framework. ADR% and ATR% are updated daily; beta is computed over a trailing 90-day window.

Does PRTA have a seasonal pattern?

TickerStance computes PRTA's month-by-month seasonality from its full daily price history: the average and median return for each calendar month, how often that month closed higher, and the best and worst months on record. These are historical frequencies, not forecasts — a strong seasonal month describes what PRTA has tended to do in prior years, not a prediction of what comes next. The full month-by-month heatmap and win-rate table sit higher on this page.

When did PRTA last report earnings?

PRTA most recently filed a 10-Q covering FY26 Q2 with the SEC on 2026-08-06. TickerStance sources earnings data from SEC EDGAR XBRL submissions and updates the fundamentals panel daily. The Pro dossier shows eight quarters of EPS and revenue trend, operating margin history, and a composite earnings-quality rank.

Prothena Corporation plc Ordinary Shares (PRTA)

TODAY'S READ · AS OF 2026-08-24

As of 2026-08-24, Prothena Corporation plc Ordinary Shares (PRTA) has a 3-month relative strength percentile of 39 within the TickerStance CS+ADRC universe (~5,000 tickers). Its Power rating (absolute 1–99) is 48. The current market Stance is 47.8 (Neutral). Sector: Healthcare, ranked 3 of 11. Average daily range 4.7%, relative volume 0.53×. TickerStance reports observed regime conditions across the full CS+ADRC universe; band assignment reflects current breadth, momentum, and macro inputs computed at the daily close. Percentile ranks run from 1 (weakest) to 99 (strongest) relative to all universe members on the same date.

RS methodology →

Market-wide RS; lit = leaderboard

Lenses lit

3 month39pctile

6 month52pctile

1 year54pctile

Classic40IBD pctile

LDR31leadership

0 of 5 lenses lit · avg RS pctile 43

!ADR%4.7%✓A/DB!RVOL0.53×!$ Vol$5M

Market backdrop

47.8Neutral

Trend30% weight44.9 Breadth30% weight50.6 Leadership20% weight42.4 Macro20% weight59.0 Full stance breakdown →

§ Seasonality

10y · since 2022

Best monthSep on averageavg +26.35% · 50% win · n 4

Worst monthJan on averageavg -8.26% · 25% win · n 4

PRTA monthly seasonality strip
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
1	PRTA Jan avg: -8.26% median: -6.94% win: 25% σ: 10.19% n: 4 2022-04-12 → 2026-07-31	PRTA Feb avg: 1.32% median: -1.49% win: 25% σ: 6.55% n: 4 2022-04-12 → 2026-07-31	PRTA Mar avg: -8.23% median: -11.65% win: 25% σ: 14.41% n: 4 2022-04-12 → 2026-07-31	PRTA Apr avg: -7.31% median: -15.33% win: 40% σ: 17.39% n: 5 2022-04-12 → 2026-07-31	PRTA May avg: -7.23% median: -6.62% win: 40% σ: 27.62% n: 5 2022-04-12 → 2026-07-31	PRTA Jun avg: 6.02% median: -0.29% win: 40% σ: 14.85% n: 5 2022-04-12 → 2026-07-31	PRTA Jul avg: 4.84% median: 12.79% win: 80% σ: 13.41% n: 5 2022-04-12 → 2026-07-31	PRTA Aug avg: -4.88% median: -7.79% win: 25% σ: 17.96% n: 4 2022-04-12 → 2026-07-31 (current)	PRTA Sep avg: 26.35% median: 5.19% win: 50% σ: 64.95% n: 4 2022-04-12 → 2026-07-31	PRTA Oct avg: -2.83% median: 1.47% win: 75% σ: 14.97% n: 4 2022-04-12 → 2026-07-31	PRTA Nov avg: -3.39% median: -2.32% win: 25% σ: 5.54% n: 4 2022-04-12 → 2026-07-31	PRTA Dec avg: -4.45% median: -7.39% win: 25% σ: 11.60% n: 4 2022-04-12 → 2026-07-31

Evidence · 1 of 3

Receipts behind the read

0 of 5 pass

Leadership

Is it leading?

Relative strength across horizons plus the leadership score.

1m

66

3m

39

6m

52

1y

54

LDR

—

StageWeinstein stage analysis

Stage 3 · Topping

Smart money

Who's accumulating?

Accumulation rating, relative volume, U/D ratio, breakout-day proof.

Fundamentals · PRTA

Does the business back the chart?

SEC EDGAR · last filing 10-Q · FY26 Q2 · period end 2026-06-30

95

Fundamentals Growth Rank

How does growth rank vs. the universe?

vs. 4,480 ranked stocks · Sector rank 95

View fundamental leadership map

Leader

Earnings

Are losses narrowing?

Diluted EPS, last 8 quarters. Loss makers are judged by progress toward breakeven.

Loss narrowing

−$1.10—

24 Q3

−$1.05—

24 Q4

Evidence · 2 of 3

Sector context

Healthcare · 82th pctile in sector

Top peers · Healthcare

Who else is leading?

ELOX
99RS 3m
FBRX
99RS 3m
MRNA
99RS 3m
PRTA
39RS 3m · you

Sector vs market

Healthcare · 3 of 11

Energy100

Technology91

Healthcare82

Financials

PEERS · Pharmaceutical Products

Same industry, closest relative strength

4 peers · by RS6M

ANNXAnnexon, Inc. Common Stock52 BLRXBioLineRX Ltd52 VTRSViatris Inc. Common Stock53 BMRNBioMarin Pharmaceuticals Inc52

ETF OWNERS

ETFs holding PRTA

PRTA is held by 11 ETFs as of May 2026. Top owner: VTWO at 0.01% weight, $2M notional. Top 3 carry $5M.

Held by 22 ETFs · $13M across latest filings · largest weight 0.51% (IBRN).

ETFs holding: 11
Total value: $5M
Top 3 concentration: 89.1%
Max weight: QQQS · 0.48%

Top 10 by value, from SEC N-PORT-P filings dated May 2026.

ETFs holding PRTA ranked by value
ETF	Weight	Value	Δ
VTWO	0.01%	$2M	—
VHTVanguard Health Care ETF	0.01%	$1M	—
AVSC	0.03%	$839K	—
VTWV	0.03%	$323K	—
QQQS	0.48%	$90K	+0.10 pp
VTWG

Public attention · PRTA

Is the crowd watching?

31/ 100 · vs its own 90-day norm▼ 9 vs 7dOverlooked

Weak relative strength and quiet attention. Little to read here either way.

Measures how unusual this name’s public attention is against its own 90-day history — a surprise reading, not a ranking of how watched it is versus other stocks. Intel, not a signal.

News

Reference

Company snapshot

SectorHealthcare

IndustryPharmaceutical Products

SIC2834

Float42.2Mshares

Shares out51.3Mshares

Market cap$482.1MSmall Cap

FAQ

Frequently asked questions

What is PRTA's relative strength rating?: PRTA ranks at the 66th percentile over 1 month, 39th percentile over 3 months, 52th percentile over 6 months, 54th percentile over 1 year against the full TickerStance CS+ADRC universe of U.S. equities.
What sector is PRTA in?: PRTA is classified under the Healthcare sector within the Pharmaceutical Products industry per the TickerStance sector-classification pipeline, which maps U.S. equities to GICS-aligned sectors using exchange SIC codes and Massive Finance reference data. Healthcare is currently ranked 3 of 11 sectors by relative strength.
Is PRTA in a leading sector?: Yes — Healthcare ranks at the 82th percentile by sector relative strength, placing it in the leading band (≥ 70th percentile). PRTA benefits from positive sector-level momentum, which historically correlates with above-average stock-level RS performance in the O'Neil / Minervini framework.
How volatile is PRTA?: PRTA currently shows a 20-day average daily range (ADR%) of 4.7%, a 90-day beta versus the S&P 500 of 0.65. An ADR% above 4% indicates an intraday swing-trading eligible name in the Minervini Volatility Contraction Pattern framework. ADR% and ATR% are updated daily; beta is computed over a trailing 90-day window.
Does PRTA have a seasonal pattern?: TickerStance computes PRTA's month-by-month seasonality from its full daily price history: the average and median return for each calendar month, how often that month closed higher, and the best and worst months on record. These are historical frequencies, not forecasts — a strong seasonal month describes what PRTA has tended to do in prior years, not a prediction of what comes next. The full month-by-month heatmap and win-rate table sit higher on this page.

Prothena Corporation plc Ordinary Shares (PRTA) — Stance & relative strength

Lenses lit

Market backdrop

§ Seasonality

Receipts behind the read

Is it leading?

Who's accumulating?

Does the business back the chart?

Are losses narrowing?

Sector context

Who else is leading?

Healthcare · 3 of 11

Same industry, closest relative strength

ETFs holding PRTA

Is the crowd watching?

Company snapshot

Frequently asked questions

How much does it move?

Is revenue confirming?

Are margins expanding?

Share count: tailwind or headwind?

§ Seasonality

Prothena Corporation plc Ordinary Shares (PRTA) — Stance & relative strength

PRTA is not confirmed as a leader. 39 is not yet a leadership-grade RS read, Market Stance is 47.8

Lenses lit

Market backdrop

Receipts behind the read

Is it leading?

Who's accumulating?

Does the business back the chart?

Are losses narrowing?

Sector context

Who else is leading?

Healthcare · 3 of 11

Same industry, closest relative strength

ETFs holding PRTA

Is the crowd watching?

Company snapshot

Frequently asked questions

How much does it move?

Is revenue confirming?

Are margins expanding?

Share count: tailwind or headwind?