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HowShorted

How shorted was T2 Biosystems, Inc.? TTOO

T2 Biosystems, Inc. left the US market in 2025. This page is a frozen archive of its reported short interest, ending 31 Jan 2025. The ticker TTOO no longer refers to this company and may since have been reassigned.
4.02%
of shares outstanding reported short · settlement date 31 Jan 2025
vs previous report
+0.09
5 reports (~10 weeks)
−0.85
days to cover
1.00
Aggregate net short position time series for T2 Biosystems, Inc.

Markers along the chart's base: ▲ results announced (an 8-K reporting results was filed) ▲ quarterly or annual report filed. Dates are SEC filing dates; hover a point to see events since the previous settlement.

Days to cover

FINRA's own figure: reported shares short divided by the stock's average daily trading volume, published alongside each settlement. It expresses the short position in days of typical trading rather than as a percentage of the company; the two can move differently.

Aggregate net short position time series for T2 Biosystems, Inc. days to cover

Short interest around results

For each results announcement (an 8-K reporting results, by its SEC filing date), the FINRA settlement before it and the first one after. Settlements fall twice a month, so the two figures can sit up to a month apart and much else changes in between: this shows what was reported, not why.

Reported short interest before and after each results announcement
Results filedSettlement beforeSettlement afterChange
7 Jan 20254.48% 31 Dec 20243.93% 15 Jan 2025−0.55
15 Nov 20244.78% 31 Oct 20244.16% 29 Nov 2024−0.62
16 Oct 20243.24% 15 Oct 20244.78% 31 Oct 2024+1.54
7 Oct 20242.03% 30 Sep 20243.24% 15 Oct 2024+1.21
29 Jul 20246.94% 15 Jul 20247.74% 31 Jul 2024+0.80
6 May 202410.75% 30 Apr 202411.55% 15 May 2024+0.80
16 Feb 202410.47% 15 Feb 20247.81% 29 Feb 2024−2.66
15 Feb 20247.97% 31 Jan 20247.81% 29 Feb 2024−0.16
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Sector: Healthcare

History

Full reported short interest history
Settlement dateShort %Change
31 Jan 20254.02%+0.09
15 Jan 20253.93%−0.55
31 Dec 20244.48%+1.51
13 Dec 20242.97%−1.19
29 Nov 20244.16%−0.71
15 Nov 20244.87%+0.09
31 Oct 20244.78%+1.54
15 Oct 20243.24%+1.21
30 Sep 20242.03%−0.11
13 Sep 20242.14%+0.32
30 Aug 20241.82%+0.03
15 Aug 20241.79%−5.95
31 Jul 20247.74%+0.80
15 Jul 20246.94%−0.63
28 Jun 20247.57%+1.84
14 Jun 20245.73%+0.46
31 May 20245.27%−6.28
15 May 202411.55%+0.80
30 Apr 202410.75%+3.96
15 Apr 20246.79%−0.41
28 Mar 20247.20%−0.09
15 Mar 20247.29%−0.52
29 Feb 20247.81%−2.66
15 Feb 202410.47%+2.50
31 Jan 20247.97%−0.17
12 Jan 20248.14%+1.28
29 Dec 20236.86%+0.96
15 Dec 20235.90%−1.15
30 Nov 20237.05%−0.71
15 Nov 20237.76%+0.15
29 Sep 20237.61%+0.50
15 Sep 20237.11%−0.24
31 Aug 20237.35%−0.70
15 Aug 20238.05%+3.57
30 Sep 20224.48%+0.04
15 Sep 20224.44%+0.25
31 Aug 20224.19%−1.89
15 Aug 20226.08%−3.11
29 Jul 20229.19%+0.71
15 Jul 20228.48%+3.24
30 Jun 20225.24%−0.46
15 Jun 20225.70%+0.34
31 May 20225.36%−0.17
13 May 20225.53%+0.48
29 Apr 20225.05%+0.43
14 Apr 20224.62%−0.13
31 Mar 20224.75%+0.21
15 Mar 20224.54%+0.22
28 Feb 20224.32%+0.93
15 Feb 20223.39%−0.18
31 Jan 20223.57%−1.04
14 Jan 20224.61%+0.70
31 Dec 20213.91%−0.23
15 Dec 20214.14%−1.13
30 Nov 20215.27%+0.06
15 Nov 20215.21%+0.41
29 Oct 20214.80%+0.35
15 Oct 20214.45%−0.01
30 Sep 20214.46%−0.77
15 Sep 20215.23%+1.11
31 Aug 20214.12%−1.38
13 Aug 20215.50%−0.80
30 Jul 20216.30%+0.74
15 Jul 20215.56%+0.41
30 Jun 20215.15%−0.22
15 Jun 20215.37%−1.28
28 May 20216.65%−0.55
14 May 20217.20%−0.78
30 Apr 20217.98%+0.53
15 Apr 20217.45%+0.10
31 Mar 20217.35%+0.43
15 Mar 20216.92%+0.55
26 Feb 20216.37%−0.23
12 Feb 20216.60%+0.44
29 Jan 20216.16%−0.42
15 Jan 20216.58%+1.39
31 Dec 20205.19%−0.26
15 Dec 20205.45%−1.04
30 Nov 20206.49%−0.65
13 Nov 20207.14%−0.39
30 Oct 20207.53%−1.52
15 Oct 20209.05%−0.23
30 Sep 20209.28%+0.80
15 Sep 20208.48%+1.08
31 Aug 20207.40%−0.09
14 Aug 20207.49%−3.04
31 Jul 202010.53%−0.70
15 Jul 202011.23%+4.33
30 Jun 20206.90%+0.51
15 Jun 20206.39%−0.54
29 May 20206.93%+0.91
15 May 20206.02%+1.34
30 Apr 20204.68%−0.86
15 Apr 20205.54%−2.78
31 Mar 20208.32%+3.53
13 Mar 20204.79%−7.34
28 Feb 202012.13%+2.30
14 Feb 20209.83%+1.22
31 Jan 20208.61%−0.22
15 Jan 20208.83%+1.25
31 Dec 20197.58%−1.59
13 Dec 20199.17%+0.24
29 Nov 20198.93%−0.12
15 Nov 20199.05%−1.58
31 Oct 201910.63%+1.08
15 Oct 20199.55%+0.28
30 Sep 20199.27%−0.15
13 Sep 20199.42%−2.94
30 Aug 201912.36%−2.16
15 Aug 201914.52%+2.46
31 Jul 201912.06%+1.40
15 Jul 201910.66%−1.52
28 Jun 201912.18%+0.47
14 Jun 201911.71%−2.26
31 May 201913.97%−0.44
15 May 201914.41%0.00
30 Apr 201914.41%+0.80
15 Apr 201913.61%+1.10
29 Mar 201912.51%+4.56
15 Mar 20197.95%+1.41
28 Feb 20196.54%+0.09
15 Feb 20196.45%−0.04
31 Jan 20196.49%−0.03
15 Jan 20196.52%+0.21
31 Dec 20186.31%−0.15
14 Dec 20186.46%−0.30
30 Nov 20186.76%−0.12
15 Nov 20186.88%−1.96
31 Oct 20188.84%−0.45
15 Oct 20189.29%+1.64
28 Sep 20187.65%+0.49
14 Sep 20187.16%+0.12
31 Aug 20187.04%−1.13
15 Aug 20188.17%+0.58
31 Jul 20187.59%−1.89
13 Jul 20189.48%−0.18
29 Jun 20189.66%+2.33
15 Jun 20187.33%+2.16
31 May 20185.17%+0.90
15 May 20184.27%−0.31
30 Apr 20184.58%+0.07
13 Apr 20184.51%+0.22
29 Mar 20184.29%+0.90
15 Mar 20183.39%+0.52
28 Feb 20182.87%+0.31
15 Feb 20182.56%−0.32
31 Jan 20182.88%+0.05
12 Jan 20182.83%−0.07
29 Dec 20172.90%–

Newest first. Scroll inside the table for earlier dates, back to 29 Dec 2017.

Frequently asked questions

How shorted was T2 Biosystems, Inc.?
T2 Biosystems, Inc. left the US market in 2025. Its final reported figure was 4.02% of shares outstanding for settlement date 31 Jan 2025, per FINRA's consolidated short interest report; this page preserves its full history.
What does this number include?
FINRA member firms must report their short positions in all US equities twice a month; FINRA consolidates them per security. We divide that official share count by the company's shares outstanding from its SEC filings. This is the regulatory figure, not a daily estimate.
Why does it only update twice a month?
US short interest is reported for settlement on the 15th and the last business day of each month, and FINRA publishes the consolidated figures about nine business days later. That cadence is set by regulation; no daily official figure exists.
Is this TTOO's short float?
No. This is short interest as a percentage of shares outstanding, the count in the company's SEC filings. "Short float" divides the same FINRA short count by the public float, which excludes closely held shares, so it comes out higher for the same company. We publish no float estimates: the float is not a regulatory figure.
What is TTOO's days to cover?
1.00 days for settlement date 31 Jan 2025: FINRA's own short interest ratio, the reported shares short divided by average daily trading volume. It is published in the same FINRA file and shown verbatim; we hold no volume data ourselves.
Which funds are short?
US public short interest is aggregate-only: individual short sellers are not named. Only some EU markets publish named positions.