Zenas Biopharma Inc (ZBIO) returns
$28.39 -1.29% Close Oct 30, 2026 Live
Zenas Biopharma returns over 1 year
$1,000 invested in Zenas Biopharma one year ago was worth $950.13 at the close on October 30, 2026, with dividends reinvested. The same $1,000 in the S&P 500 (SPY) became $1,124.
ZBIO, $10,000 investedS&P 500 (SPY)
$10,000$20,000
20252026
Total return by period
| Period | Total return | A year, on average | $1,000 became | S&P 500 (SPY) |
|---|---|---|---|---|
| 1 month | +5.3% | — | $1,053 | -0.9% |
| 3 months | -12.0% | — | $879.76 | +2.1% |
| Year to date | -21.8% | — | $781.88 | +11.7% |
| 1 year | -5.0% | — | $950.13 | +12.4% |
Zenas Biopharma return by calendar year
| Year | ZBIO | S&P 500 (SPY) | Difference |
|---|---|---|---|
| 2026 to date | -21.8% | +11.7% | -33.5% |
| 2025 | +343.3% | +17.7% | +325.6% |
Past returns do not predict future returns. Returns are computed from our daily closes, adjusted for splits and with dividends reinvested on their ex-dates; taxes and trading costs are left out.
See also: ZBIO financials
No forecast, no recommendation. This page describes Zenas Biopharma Inc from published data; it is not advice to buy, sell or hold any security.
Figures as of the close on Oct 30, 2026 unless a row says otherwise. Prices are split adjusted; returns include dividends reinvested. Data may be delayed. See the disclaimer and how TrendArc works.