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ZBIO

Zenas BioPharma, Inc.
$28.24 -1.17 (-3.98%) At close · Jul 16
Market Cap
$1.78B
Shares
63,133,377

Total shares sold short and not yet covered, reported to FINRA by broker-dealers and published twice a month (bi-monthly). Days to cover divides the short position by average daily volume; a high value (above 5) can signal short-squeeze potential.

Short Squeeze Score
84/100
Short interest 19.3% of shares — P98 Days to cover 9.6 — P95 Price vs VWAP +26.0% — P97 Short-volume trend +0.0% — P52 Short interest change +9.6% — P66 Worst FTD 0.08% of shares — P73

Peer-relative percentile rank across all stocks reporting short interest at the latest settlement date (2026-06-30). Weighted mean of the available factors (short interest 30%, days to cover 20%, price vs VWAP 15%, short-volume trend 15%, short-interest change 10%, fails-to-deliver 10%) plus catalyst boosts (price spike, volume surge, earnings within days), capped at +20 and clamped to 100.

Short Interest History

Settlement Date Current Position Previous Position Change Days to Cover
2026-06-30 12,196,436 11,131,739 +1,064,697 9.64
2026-06-15 11,131,739 10,879,470 +252,269 19.33
2026-05-29 10,879,470 10,687,286 +192,184 18.13
2026-05-15 10,687,286 10,853,674 -166,388 21.31
2026-04-30 10,853,674 10,223,630 +630,044 23.97
2026-04-15 10,223,630 9,362,107 +861,523 12.37
2026-03-31 9,362,107 7,709,823 +1,652,284 7.48
2026-03-13 7,709,823 8,023,712 -313,889 22.25
2026-02-27 8,023,712 7,801,280 +222,432 10.70
2026-02-13 7,801,280 6,568,745 +1,232,535 8.41
2026-01-30 6,568,745 6,086,840 +481,905 11.32
2026-01-15 6,086,840 4,779,373 +1,307,467 3.01
2025-12-31 4,779,373 4,950,866 -171,493 11.90
2025-12-15 4,950,866 4,858,909 +91,957 17.31
2025-11-28 4,858,909 4,607,781 +251,128 14.36
2025-11-14 4,607,781 4,766,849 -159,068 12.34
2025-10-31 4,766,849 4,336,248 +430,601 6.79
2025-10-15 4,336,248 5,616,578 -1,280,330 9.85
2025-09-30 5,616,578 5,551,112 +65,466 20.09
2025-09-15 5,551,112 5,760,485 -209,373 17.89
2025-08-29 5,760,485 5,265,933 +494,552 27.55
2025-08-15 5,265,933 5,225,303 +40,630 44.74
2025-07-31 5,225,303 5,072,285 +153,018 41.48
Showing 1–23 of 23 settlements
Key facts CIK 1953926 CUSIP 98937L105 13F (30d) 4 filings 4 filers Visit website Investor relations