P

Prothena Corporation plc

PRTANASDAQHEALTHCARE
$8.25-0.01 (-0.12%)
Market closedPrev close $8.26

AlphaYou read

Insider Buy

LONGLive
17/ 100
WeakScore 17 / 100Saved Jun 12, 2026

Insider bought $2.0M of PRTA this 14d.

Looks good

Insider bought $2.0M of PRTA this 14d.

Watch risk

Negative ROE (-40.3%) - capital destruction

Changed

Saved Jun 12, 2026. Day 1 of 30D; +0.0% vs S&P so far.

  • Smart money6.9/40
  • Fundamentals4.0/35
  • Technicals2.0/15
  • Macro4.0/10

Price

Stock chart

1call marked
Prior call1

Snapshot

Quick facts

Updated Jun 14
Market cap
$431.9M
P/E ratio
--
Forward P/E
10.63
Beta
-0.32
52-week range
$5.29 - $11.80
Dividend yield
--
Volume
315.4K
Sector
HEALTHCARE

Analysts

What do analysts expect?

Live

Current

$8.25

Target

$21.40

+13.15 (+159.4%) possible upside12 months

Saved calls

Recent AlphaYou calls for this stock

  • LONGJun 12
    Insider Buy

    Insider bought $2.0M of PRTA this 14d.

    Public call·Results pending
  • LONGMay 29
    Insider Buy

    Insider bought $981K of PRTA this 14d.

    Public call·Results pending

Smart money

What big buyers and insiders are doing

Live6 items
  • insider buy

    10% owner SCULLY WILLIAM P bought $1.0M

    +1531838.0
  • insider buy

    10% owner SCULLY WILLIAM P bought $465K

    +697942.0
  • insider buy

    10% owner SCULLY WILLIAM P bought $471K

    +706950.0
  • short interest change

    short-volume tape softening: latest 56.9% fell 11.6pp vs 20d avg 68.6%

    +2.0
  • insider buy

    10% owner SCULLY WILLIAM P bought $981K

    +1471950.0
  • short interest change

    short-volume tape softening: latest 53.2% fell 11.1pp vs 20d avg 64.3%

    +2.0

Top trader activity

Pending

Real trader activity will show here once the feed is ready.

BTC Astro risk regime

Pending

A broad risk read. Used only as context, not as the main stock reason.

Who helped?

Sources tied to past calls on this stock

Source types

  • SEC EDGAR Form 4

    Source family

    D7

    190

    +2.09%

    62.6% hit

    D15

    139

    +2.78%

    65.5% hit

    D30

    28

    +5.28%

    75.0% hit

Funds, insiders, and filers

Did it work?

How past calls did

Soon

No results yet for this stock.

Results appear 7, 15, and 30 days after a call.

Each row shows what happened after the call. Green means it beat the comparison; red means it lagged.

Source links

Can you check the original source?

LiveRules
100.0%
Linked
4
Items
2
Calls
2
Public calls
Source links4/4
SEC EDGAR Form 44/4 linked
Recent source items
  • SEC EDGAR Form 4

    INSIDER BUY · Jun 12· source

    linked
  • SEC EDGAR Form 4

    INSIDER BUY · Jun 5· source

    linked
  • SEC EDGAR Form 4

    INSIDER BUY · Jun 3· source

    linked
  • SEC EDGAR Form 4

    INSIDER BUY · May 26· source

    linked

Fundamentals

Is the business strong?

Live

Valuation

  • P/E--
  • Forward P/E10.63
  • P/S7.45
  • P/B1.38

Quality

  • Profit margin-260.9%
  • Operating margin50.5%
  • ROE-40.3%
  • ROA-13.8%

Growth

  • Revenue YoY--
  • Earnings YoY--
  • Beta-0.32
  • Dividend yield--

Technicals

Chart health

Live

Trailing returns

  • 5d-6.14%
  • 20d-16.33%
  • 60d-3.96%

Trend vs moving averages

  • vs SMA50-17.68%
  • vs SMA200-14.36%

52w range position

$5.2945%$11.80

Based on daily price data. Options flow and order-book data are not in this chart panel yet.

Macro

Market backdrop

Live
  • sector rotation

    6/11 sectors leading SPY by >=1pp over 20d (broad-based uptrend)

    +2.0
  • sector rotation

    Equal-weight S&P 500 (RSP) +4.0pp vs SPY, Russell 2000 (IWM) +3.4pp vs SPY (broad participation)

    +1.0
  • macro regime shift

    Speculator (leveraged-money) net short on E-MINI S&P 500 at 1.9th percentile vs trailing 52w (extreme bearish positioning, mean-reversion bullish) as of 2026-06-02

    +1.0
  • macro regime shift

    VIX 16.3 (mild) as of 2026-05-27

    +16.3
  • macro regime shift

    10y-2y spread 48bps (flattish) as of 2026-05-27

    +0.5

Earnings

Did earnings help or hurt?

Soon

No earnings history yet for this stock.

Past earnings will show here when they are ready.

Bull vs bear

What could help or hurt?

Live
  • Bullish view

    • 10% owner SCULLY WILLIAM P bought $1.0M
    • 10% owner SCULLY WILLIAM P bought $465K
    • 10% owner SCULLY WILLIAM P bought $471K
    • short-volume tape softening: latest 56.9% fell 11.6pp vs 20d avg 68.6%

    Bearish view

    No reasons on this side yet.

Reasons come from smart money, fundamentals, technicals, and macro. Counts show how many reasons sit on each side.

Scorecard

Past call results

vs SPY

S&P 500

1 call · 1L · 0S

Typical edge

-9.42%

Avg edge

-9.42%

Hit rate

0.0%

Mean return

-11.92%

vs QQQ

Nasdaq-100

1 call · 1L · 0S

Typical edge

-7.42%

Avg edge

-7.42%

Hit rate

0.0%

Mean return

-11.92%

Results are grouped by stock, direction, and day so the same call is not counted twice.