Red List
ZBIO
Zenas BioPharma, Inc.
Healthcare · Biotechnology · small-cap ($1.3B)
-57.6%
from rolling 252-day high of $44.60 set 2025-12-24 · 141d ago
Current
$18.90
Decline depth
-57.6%
Decline σ
2.9σ
TFC
2/5 bearish
Rolling 252-day high Up day Down day Last 90 trading days · data from Alpaca

Structural break signals

ZBIO qualifies for the Red List on decline depth.

Decline depth
-57.6%
From rolling 252-day high of $44.60, 141d ago. Past the 40% Red List threshold.
Time-frame continuity
2/5 bearish
Latest bar across daily/weekly/monthly/quarterly/yearly time frames. A bar counts as bearish when it's a 2-Down or a red 3.
Decline sigma
2.9σ
Drop from local high over the last 10 bars, expressed in units of the stock's typical daily volatility (5.15% per day).

The structural read

What price action says about ZBIO.

ZBIO qualifies for the Red List on decline depth — down -57.6% from its rolling 252-day high. Past the 40% threshold, the deepest tier in the taxonomy.

52-week range

52W low $8.51 28.8% of range 52W high $44.60

Sector context · Healthcare

182 other Healthcare tickers are on Broken Stocks.

92 Red List
43 Amber
47 Watch
-35.8% Median decline

Worst in sector: OPRX (-76.7%). Least-bad: ANIP (-20.0%). See all Healthcare listings →

Questions about ZBIO

What people ask.

Why is ZBIO on Broken Stocks?

ZBIO qualifies for the Red List on decline depth. It is down -57.6% from its rolling 252-day high of $44.60, set on 2025-12-24 — 141d ago.

Is ZBIO a falling knife?

Not by the strict technical definition. ZBIO is down -57.6% from its 52-week high, but that high was set 141d ago — more than 120 days. A falling knife is usually a recent breakdown from a fresh high, not an established multi-quarter downtrend. ZBIO is still on the Red List for decline depth, but the freshness component of a falling knife is missing.

Is ZBIO a buy?

Broken Stocks does not issue buy or sell recommendations. The list is a rules-based technical warning system. It tracks structural decline depth and recency — not company quality, management, fundamentals, or news. Always do your own research and consult a licensed advisor.

Where is ZBIO trading inside its 52-week range?

At $18.90, ZBIO sits 28.8% of the way from its 52-week low ($8.51) to its 52-week high ($44.60). A reading below 25% indicates price is hugging the bottom of the range; above 75%, the top.

How fast has ZBIO been declining?

The current 57.6% decline accrued over 141d, which annualizes to roughly -149.1% per year. Annualized pace is a sanity check — a 30% decline in three months is a different signal than a 30% decline over two years.

How does ZBIO compare to its sector?

There are 182 other Healthcare tickers on Broken Stocks: 92 Red, 43 Amber, 47 Watch, with 55 showing recovering structural signals. Median sector decline is -35.8% — ZBIO's decline is deeper than the sector median.