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Cytek Biosciences, Inc. short interest

4.4M shares of Cytek Biosciences were sold short at the 15 October 2026 settlement, near the bottom of its range over the last year (3.5M to 8.1M). Short sellers would need 2.7 days of normal trading to buy them back.

Shares sold short4.4Mat 15 Oct 2026
Change on the settlement before-15.5%-30% over a year
Days to cover2.68at 1.6M shares a day
Of shares in issue3.39%shares short over shares outstanding
New to this? How to read this page
  1. Short interest is the number of shares investors have borrowed and sold, betting the price will fall, and not yet bought back.
  2. Days to cover is shares short over an average day's trading: how many days it would take short sellers to buy them all back. Above 5 or so is high.
  3. Rising short interest says more investors are betting against the stock. A crowded short can also rise fast if shorts rush to buy back.
  4. Brokers report it twice a month to FINRA, about ten days after each settlement date.
  5. What is short interest?

Short interest, days to cover and the price

Short interest is near the bottom of its range over the last year (3.5M to 8.1M), and the share price moved +55% over the last year.

Shares sold shortDays to coverShare price

Three charts on one timeline. Top: shares sold short at each settlement. Middle: days to cover, taller meaning shorts would need longer to buy back. Bottom: the share price, so you can see whether shorts added as the price fell or rose.

How it compares

every company on the site

    The bar ranks every company on the site from the lowest on the left to the highest on the right, in three equal thirds; the small figures under it are the values where each third starts, and the black tick is the middle company. The orange dot is this company; the grey ticks are the other companies in its industry (hover or tap for names). A hatched block is companies tied at none.

    Every settlement since 30 Jul 2021 as a table
    SettlementShares shortChangeAverage daily volumeDays to cover
    15 October 20264.4M-15.5%1.6M2.68
    30 September 20265.2M-0.5%1.7M3.13
    15 September 20265.2M+6.3%914K5.74
    31 August 20264.9M-1.2%743K6.64
    14 August 20265.0M+1.9%982K5.08
    31 July 20264.9M-2.7%656K7.46
    15 July 20265.0M+43.4%921K5.46
    30 June 20263.5M-50.2%3.4M1.03
    15 June 20267.0M-3.6%1.3M5.53
    29 May 20267.3M+6.4%897K8.14
    15 May 20266.9M-11.3%1.2M5.96
    30 April 20267.7M-4.4%626K12.37
    15 April 20268.1M+0.5%472K17.17
    31 March 20268.1M+6.5%743K10.85
    13 March 20267.6M+3.8%877K8.62
    27 February 20267.3M+8.6%655K11.12
    13 February 20266.7M+2.5%1.0M6.62
    30 January 20266.5M+2.3%731K8.95
    15 January 20266.4M-2.1%914K7.00
    31 December 20256.5M-3.8%1.1M6.17
    15 December 20256.8M-2.0%1.3M5.31
    28 November 20256.9M+4.3%2.0M3.53
    14 November 20256.6M+3.8%1.9M3.57
    31 October 20256.4M+1.9%583K10.98
    15 October 20256.3M-1.0%786K7.99
    30 September 20256.3M+10.9%863K7.35
    15 September 20255.7M+0.6%925K6.18
    29 August 20255.7M+0.2%925K6.14
    15 August 20255.7M+11.2%1.3M4.31
    31 July 20255.1M-9.7%931K5.48
    15 July 20255.6M+19.1%996K5.67
    30 June 20254.7M-6.8%1.5M3.23
    13 June 20255.1M-5.9%1.8M2.78
    30 May 20255.4M+16.3%1.2M4.64
    15 May 20254.7M+10.9%928K5.01
    30 April 20254.2M+1.4%586K7.15
    15 April 20254.1M-8.7%869K4.76
    31 March 20254.5M+19.1%1.0M4.35
    14 March 20253.8M+10.3%808K4.71
    28 February 20253.5M-0.3%659K5.24
    14 February 20253.5M+9.1%905K3.82
    31 January 20253.2M-8.6%734K4.32
    15 January 20253.5M-0.3%869K3.99
    31 December 20243.5M-5.7%577K6.04
    13 December 20243.7M-6.6%553K6.68
    29 November 20244.0M-3.9%560K7.06
    15 November 20244.1M-2.1%1.2M3.29
    31 October 20244.2M-6.1%415K10.13
    15 October 20244.5M+4.0%507K8.82
    30 September 20244.3M+5.6%725K5.94
    13 September 20244.1M-11.6%685K5.95
    30 August 20244.6M+0.6%497K9.27
    15 August 20244.6M-16.2%741K6.18
    31 July 20245.5M-13.8%540K10.12
    15 July 20246.3M-1.7%494K12.84
    28 June 20246.4M-0.3%1.1M5.63
    14 June 20246.5M-0.1%591K10.94
    31 May 20246.5M-1.6%471K13.74
    15 May 20246.6M-16.2%775K8.49
    30 April 20247.9M+5.1%678K11.59
    15 April 20247.5M-24.9%671K11.14
    28 March 20249.9M+16.9%745K13.35
    15 March 20248.5M+9.1%912K9.33
    29 February 20247.8M+4.7%605K12.88
    15 February 20247.4M-2.6%498K14.94
    31 January 20247.6M+0.0%560K13.64
    12 January 20247.6M+5.2%1.1M6.99
    29 December 20237.3M-5.3%726K10.00
    15 December 20237.7M-3.7%1.1M6.88
    30 November 20238.0M-5.1%1.4M5.89
    15 November 20238.4M+5.8%1.1M7.97
    31 October 20237.9M+0.7%1.2M6.35
    13 October 20237.9M-2.8%779K10.10
    29 September 20238.1M-31.8%703K11.52
    15 September 202311.9M+0.5%1.5M7.97
    31 August 202311.8M+2.6%782K15.10
    15 August 202311.5M-4.3%678K16.97
    31 July 202312.0M+4.9%784K15.34
    14 July 202311.5M+9.3%535K21.41
    30 June 202310.5M+11.4%980K10.69
    15 June 20239.4M+8.4%740K12.72
    31 May 20238.7M-22.5%1.1M7.76
    15 May 202311.2M+66.1%2.0M5.50
    28 April 20236.7M+3.6%2.9M2.30
    14 April 20236.5M+15.3%644K10.12
    31 March 20235.6M-2.5%671K8.42
    15 March 20235.8M+1.1%843K6.87
    28 February 20235.7M+4.4%565K10.14
    15 February 20235.5M+7.6%663K8.28
    31 January 20235.1M+28.5%705K7.23
    13 January 20234.0M+9.7%728K5.45
    30 December 20223.6M+4.4%621K5.83
    15 December 20223.5M+20.7%483K7.18
    30 November 20222.9M+3.5%550K5.22
    15 November 20222.8M-14.7%493K5.63
    31 October 20223.3M-13.8%549K5.92
    14 October 20223.8M-9.4%681K5.54
    30 September 20224.2M+51.2%1.0M4.08
    15 September 20222.8M+3.8%752K3.66
    31 August 20222.7M-3.9%525K5.05
    15 August 20222.8M-12.1%585K4.72
    29 July 20223.1M-2.2%415K7.58
    15 July 20223.2M-10.0%653K4.92
    30 June 20223.6M-9.6%989K3.61
    15 June 20224.0M-4.8%705K5.60
    31 May 20224.1M-7.8%1.1M3.82
    13 May 20224.5M+21.9%667K6.75
    29 April 20223.7M-4.8%566K6.53
    14 April 20223.9M-6.7%564K6.88
    31 March 20224.2M+321.4%2.3M1.84
    15 March 2022987K+9.5%1.4M1.00
    28 February 2022902K+44.7%1.6M1.00
    15 February 2022623K-30.0%1.0M1.00
    31 January 2022890K-12.8%378K2.35
    14 January 20221.0M+7.5%190K5.37
    31 December 2021950K+42.0%230K4.13
    15 December 2021669K+15.7%203K3.30
    30 November 2021578K-16.8%245K2.36
    15 November 2021695K-7.3%108K6.43
    29 October 2021750K-3.2%128K5.84
    15 October 2021774K+31.6%183K4.24
    30 September 2021589K+206.3%519K1.13
    15 September 2021192K+329.5%333K1.00
    31 August 202145K-51.1%223K1.00
    13 August 202192K+620.9%271K1.00
    30 July 202113K515K1.00
    Shares in millions (M) or thousands (K); hold the pointer on a figure for the exact count. FINRA publishes consolidated short interest twice a month, about ten days after each settlement.