Go Pro
→ Why Boston Ships In Natural Gas It Already Has at Home (From Porter & Company) (Ad)tc pixel Free ZYME Stock Alerts

Zymeworks (ZYME) Short Interest Ratio & Short Volume

Zymeworks logo
$28.27 -0.74 (-2.55%)
As of 08/28/2026 04:00 PM Eastern
Compare

Zymeworks Short Interest Overview

As of August 14, 2026, Zymeworks (ZYME) had a short interest of 4.54 million shares sold short, representing 9.62% of the public float. This marks a 10.51% increase in short interest since the prior report. The short interest ratio (days to cover) is 8.5, meaning it would take 8.5 days of the average trading volume of 689,537 shares to cover all short positions.

Current Short Interest
4,538,353 shares
Previous Short Interest
4,106,590 shares
Change Vs. Previous Month
10.51%
Dollar Volume Sold Short
$114.00 million
Short Interest Ratio
8.5 Days to Cover
Last Record Date
August 14, 2026
Outstanding Shares
70,959,000 shares
Short Percent of Float
9.62%
Today's Trading Volume
542,077 shares
Average Trading Volume
689,537 shares
Today's Volume Vs. Average
79%
Short Selling Zymeworks?
A Guide To High-Short-Interest Stocks

Sign up to receive the latest short interest report for Zymeworks and its competitors with MarketBeat's FREE newsletter.

Get Report
SMS is currently available in Australia, Belgium, Canada, France, Germany, Ireland, Italy, New Zealand, the Netherlands, Singapore, South Africa, Spain, Switzerland, the United Kingdom, and the United States. By entering your phone number and clicking the sign-up button, you agree to receive periodic text messages from MarketBeat at the phone number you submitted, including texts that may be sent using an automatic telephone dialing system. Message and data rates may apply. Message frequency will vary. Messages will consist of stock alerts, news stories, and partner advertisements/offers. Consent is not a condition of the purchase of any goods or services. Text HELP for help/customer support. Unsubscribe at any time by replying "STOP" to any text message that you receive from MarketBeat or by visiting our mailing preferences page. Read our full terms of service and privacy policy.
Skip Charts & View Short Interest History
Short Interest ChartDays to Cover ChartShort Percent of Float Chart

ZYME Short Interest Over Time

ZYME Days to Cover Over Time

ZYME Percentage of Float Shorted Over Time

Zymeworks Tesla Short Interest History & Recent Changes

Export
Report DateTotal Shares Sold ShortDollar Volume Sold ShortChange from Previous ReportPercentage of Float ShortedDays to CoverPrice on Report Date
8/14/20264,538,353 shares $114.00 million +10.5%9.6%8.5 $25.12
7/31/20264,106,590 shares $90.10 million +0.1%8.7%10.9 $21.94
7/15/20264,102,257 shares $101.16 million -6.0%8.4%7.56 $24.66
6/30/20264,364,318 shares $114.08 million -2.7%9.0%6.19 $26.14
6/15/20264,485,642 shares $104.34 million -0.9%9.2%5.57 $23.26
5/29/20264,527,668 shares $113.78 million +1.3%9.3%7.61 $25.13
5/15/20264,470,973 shares $106.99 million -3.8%9.2%6.64 $23.93
4/30/20264,648,225 shares $128.01 million -0.1%9.6%8.4 $27.54
4/15/20264,652,176 shares $129.00 million +4.3%9.6%7 $27.73
3/31/20264,461,520 shares $111.72 million +9.4%9.2%8.06 $25.04
3/13/20264,078,338 shares $93.31 million -1.4%8.3%4.21 $22.88
2/27/20264,135,418 shares $96.31 million +4.1%8.4%9.03 $23.29
2/13/20263,973,308 shares $89.80 million +5.2%8.2%7.22 $22.60
1/30/20263,777,909 shares $85.12 million -1.2%7.6%5.88 $22.53
1/15/20263,823,322 shares $90.35 million +6.1%7.7%2.98 $23.63
12/31/20253,603,765 shares $94.89 million -8.5%7.2%6.44 $26.33
12/15/20253,938,970 shares $102.30 million -29.8%7.9%5.68 $25.97
11/28/20255,609,170 shares $149.82 million -34.3%11.3%1.95 $26.71
11/14/20258,541,535 shares $158.19 million +13.4%11.6%7.96 $18.52
10/31/20257,531,090 shares $143.69 million +6.9%10.2%7.56 $19.08
10/15/20257,050,000 shares $131.27 million +1.9%9.6%12.6 $18.62
9/30/20256,920,000 shares $118.19 million -3.4%9.5%13.4 $17.08
9/15/20257,160,000 shares $114.06 million +3.9%9.8%14.5 $15.93
8/31/20256,890,000 shares $102.04 million +1.2%9.5%14.4 $14.81
8/15/20256,810,000 shares $97.79 million No Change9.3%15 $14.36
7/31/20256,810,000 shares $85.53 million -0.9%9.3%14.7 $12.56
7/15/20256,870,000 shares $0.00 +42.5%10.1%14.8 $0.00
6/30/20254,820,000 shares $60.49 million -29.9%3.2%5.4 $12.55
6/15/20256,880,000 shares $87.17 million -4.3%10.2%12.1 $12.67
5/31/20257,190,000 shares $83.91 million +5.9%10.6%11.5 $11.67
5/15/20256,790,000 shares $78.29 million +2.6%10.0%10.3 $11.53
4/30/20256,620,000 shares $86.13 million +1.9%9.8%10.1 $13.01
4/15/20256,500,000 shares $71.11 million +20.2%9.7%10.3 $10.94
3/14/20255,420,000 shares $66.40 million +36.9%8.1%10 $12.25
2/14/20253,840,000 shares $57.64 million -12.3%5.8%8.7 $15.01
1/31/20254,380,000 shares $63.95 million -4.0%6.6%9.4 $14.60
11/30/20229,290,000 shares $71.72 million -4.0%N/A9 $7.72
11/15/20229,680,000 shares $82.18 million +0.3%N/A9.9 $8.49
10/31/20229,650,000 shares $71.70 million -21.4%N/A10.2 $7.43
10/15/202212,270,000 shares $67.73 million +76.3%N/A14.6 $5.52
Now that SpaceX is public, buy this ticker (no, not SpaceX or Tesla) (Ad)

The SpaceX IPO wasn't the big trade - according to Larry Benedict, founder of The Opportunistic Trader, it was the trigger. Benedict, who delivered a 279% return on cash in 2025 across a 20-year winning streak, says the listing launched what he calls the 'Final Phase of Elon's Master Plan.' He's identified one specific ticker - not SpaceX, Tesla, or any Elon-affiliated company - that he believes could see billions in inflows as this phase unfolds. He calls it his trade of the year.tc pixel

Watch the video now to get the ticker name and full trade details
9/30/20226,960,000 shares $42.80 million -0.9%N/A10.5 $6.15
9/15/20227,020,000 shares $37.91 million -4.8%N/A9.3 $5.40
8/31/20227,370,000 shares $47.24 million -33.4%N/A9 $6.41
8/15/202211,060,000 shares $79.85 million +0.6%N/A11.1 $7.22
7/31/202211,000,000 shares $64.24 million -4.4%N/A9.3 $5.84
7/15/202211,510,000 shares $67.56 million +10.7%N/A6 $5.87
6/30/202210,400,000 shares $55.12 million +7.8%N/A5.3 $5.30
6/15/20229,650,000 shares $55.97 million +14.3%N/A5.1 $5.80
5/31/20228,440,000 shares $56.72 million +5.2%N/A4.5 $6.72
5/15/20228,020,000 shares $44.51 million +10.9%N/A4.6 $5.55
4/30/20227,230,000 shares $44.18 million -0.4%N/A4.5 $6.11
4/15/20227,260,000 shares $44.14 million +1.4%N/A7.4 $6.08
3/31/20227,160,000 shares $46.90 million +1.0%N/A7.2 $6.55
3/15/20227,090,000 shares $44.24 million +0.6%N/A7.2 $6.24
2/28/20227,050,000 shares $51.04 million +0.4%N/A6.8 $7.24
2/15/20227,020,000 shares $53.42 million +21.5%N/A6.6 $7.61
1/31/20225,780,000 shares $51.44 million -20.3%N/A5.5 $8.90
1/15/20227,250,000 shares $108.53 million +10.2%16.0%9 $14.97
12/31/20216,580,000 shares $107.85 million +9.3%14.5%8.6 $16.39
12/15/20216,020,000 shares $97.04 million +47.9%13.2%9 $16.12
11/30/20214,070,000 shares $81.85 million +6.8%9.0%5.8 $20.11
11/15/20213,810,000 shares $74.45 million +8.2%8.4%6.3 $19.54
10/29/20213,520,000 shares $78.32 million -22.6%7.7%7 $22.25
10/15/20214,550,000 shares $118.03 million +24.3%10.0%8.7 $25.94
9/30/20213,660,000 shares $106.29 million +28.4%8.0%8.2 $29.04
9/15/20212,850,000 shares $94.14 million +37.0%6.2%6.5 $33.03
8/31/20212,080,000 shares $68.62 million +20.2%4.6%5.3 $32.99

ZYME Short Interest - Frequently Asked Questions

Short interest is the volume of Zymeworks shares that have been sold short but have not yet been covered or closed out. As of August 14th, investors have sold 4,538,353 shares of ZYME short. 9.62% of Zymeworks' shares are currently sold short. Learn More on Zymeworks' current short interest.

The short interest ratio, also known as the "days to cover ratio", is calculated by dividing the number of shares of a stock sold short divided by its average trading volume. A short interest ratio ranging between 1 and 4 generally indicates strong positive sentiment about a stock and a lack of short sellers. A short interest ratio of 10 or greater indicates strong pessimism about a stock. ZYME shares currently have a short interest ratio of 8.5. Learn More on Zymeworks's short interest ratio.

Companies that have a short interest as a percentage of float below 10% indicates positive investor sentiment and few short sellers. Stocks with a short interest percentage above 10% is considered high, suggesting some investors are pessimistic about the stock. Companies with a short interest percentage of 20% or more indicates widespread negative sentiment. 9.62% of Zymeworks' floating shares are currently sold short.

Zymeworks saw a increase in short interest in the month of August. As of August 14th, there was short interest totaling 4,538,353 shares, an increase of 10.5% from the previous total of 4,106,590 shares. Changes in short volume can be used to identify positive and negative investor sentiment. Investors that short sell a stock are betting that its price will decline in the future. An increase in short sale volume suggests bearish (negative) sentiment among investors. A decrease on short sale volume suggests bullish (positive) sentiment.

9.62% of Zymeworks' shares are currently sold short. Here is how the short interest of companies in the industry of "biotechnology" compare to Zymeworks: Rhythm Pharmaceuticals, Inc. (15.75%), Oruka Therapeutics, Inc. (16.39%), CG Oncology, Inc. (13.33%), Scholar Rock Holding Corporation (16.68%), Mirum Pharmaceuticals, Inc. (10.90%), Cogent Biosciences, Inc. (11.36%), Kiniksa Pharmaceuticals International, plc (11.43%), Travere Therapeutics, Inc. (13.26%), Dianthus Therapeutics, Inc. (15.88%), Erasca, Inc. (10.28%),

As of the most recent reporting period, the following stocks had the largest short interest positions: SPDR S&P 500 ETF Trust ($71.57 billion), Invesco QQQ ($46.97 billion), iShares Russell 2000 ETF ($24.02 billion), Nebius Group N.V. ($15.37 billion), Sandisk Corporation ($12.60 billion), SPDR S&P Biotech ETF ($12.14 billion), Western Digital Corporation ($10.32 billion), iShares 20+ Year Treasury Bond ETF ($8.38 billion), VanEck Semiconductor ETF ($7.62 billion), and iShares iBoxx $ High Yield Corporate Bond ETF ($7.07 billion). View all of the most shorted stocks.

Short selling ZYME is an investing strategy that aims to generate trading profit from Zymeworks as its price is falling. ZYME shares are trading down $0.74 today. To short a stock, an investor borrows shares, sells them and buys the shares back on the public market later to return it to the lender. Short sellers are betting that a stock will decline in price. If the stock does drop after selling, the short seller buys it back at a lower price and returns it to the lender. The difference between the sell price and the buy price is the trader's profit.

A short squeeze for Zymeworks occurs when it has a large amount of short interest and its stock appreciates in price. This forces short sellers to cover their short interest positions by buying actual shares of ZYME, which in turn drives the price of the stock up even further.

Short interest is typically published by a stock exchange once per month. However, NASDAQ publishes a report for U.S. stocks, including ZYME, twice per month. The most recent reporting period available is August, 14 2026.

Understanding short interest metrics can help you assess how traders are positioning around a stock like ZYME:

  • Shares Sold Short: The total number of shares that have been sold by short sellers but have not yet been covered or closed out. A high number may indicate bearish sentiment.
  • Short Float: The percentage of a company’s publicly available shares (or "float") that are sold short. A higher short float suggests a greater portion of the stock is being bet against.
  • Days to Cover (Short Interest Ratio): This estimates how many days it would take short sellers to cover their positions, based on average daily trading volume. Higher values can signal potential for a short squeeze if buying pressure increases.

These metrics are often used by traders to gauge sentiment, volatility risk, and the potential for price movements based on short covering activity.


Related Companies
Short Interest Tools

Short interest data for NASDAQ:ZYME is sourced from the Financial Industry Regulatory Authority (FINRA), with the most recent report published on 8/25/2026. FINRA publishes updated short interest twice a month.
From Our Partners
The retirement stock I'd buy before Nvidia today
In 2014, Marc Chaikin pointed readers toward Nvidia. Now the 60-year Wall Street veteran and creator of the Ch...
Chaikin Analytics | Sponsoredtc pixel
A $382 trillion migration and the position no one is talking about
Trump just signed a law requiring America's entire $382 trillion financial system to migrate to a new money ne...
Awesomely | Sponsoredtc pixel
Do this before December or regret it
Porter Stansberry believes President Trump will use the December G20 Summit in Miami to unveil a radical monet...
Porter & Company | Sponsoredtc pixel
Now that SpaceX is public, buy this ticker (no, not SpaceX or Tesla)
The SpaceX IPO wasn't the big trade - according to Larry Benedict, founder of The Opportunistic Trader, it was...
Brownstone Research | Sponsoredtc pixel
SPDR Gold just lost $14 billion.
Investors pulled 2.9 billion dollars from the world's largest gold fund in a single day this March, pushing to...
Behind the Markets | Sponsoredtc pixel
Buy These Stocks Before August 31st
Keith Kaplan has invested $17 million into his own AI research platform, now used by 180,000 investors worldwi...
TradeSmith | Sponsoredtc pixel
Why the Treasury still prices gold at 42 dollars an ounce
The U.S. Treasury still values its gold reserves at 42.22 dollars an ounce, a price set in 1973. Gold trades n...
Golden Portfolio | Sponsoredtc pixel
Small Colorado Company (Backed by Sam Altman) Could Save U.S. Power Grid
A small Colorado company has secured rights to technology that could prevent the U.S. public power grid from c...
Altimetry | Sponsoredtc pixel