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HowShorted

How shorted was 2seventy bio, Inc.? TSVT

2seventy bio, Inc. left the US market in 2025. This page is a frozen archive of its reported short interest, ending 30 Apr 2025. The ticker TSVT no longer refers to this company and may since have been reassigned.
4.96%
of shares outstanding reported short · settlement date 30 Apr 2025
vs previous report
−2.27
5 reports (~10 weeks)
−5.01
days to cover
4.40
Aggregate net short position time series for 2seventy bio, 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 2seventy bio, 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
25 Mar 20256.42% 14 Mar 20255.26% 31 Mar 2025−1.16
6 Feb 202510.04% 31 Jan 20259.97% 14 Feb 2025−0.07
12 Nov 202410.51% 31 Oct 20249.88% 15 Nov 2024−0.63
31 Oct 202410.52% 15 Oct 20249.88% 15 Nov 2024−0.64
7 Aug 202413.26% 31 Jul 202412.42% 15 Aug 2024−0.84
26 Jul 202414.20% 15 Jul 202413.26% 31 Jul 2024−0.94
8 May 202413.56% 30 Apr 202412.65% 15 May 2024−0.91
25 Apr 202412.63% 15 Apr 202413.56% 30 Apr 2024+0.93
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Sector: Healthcare · By year: 2022 · 2023 · 2024 · 2025

History

Full reported short interest history
Settlement dateShort %Change
30 Apr 20254.96%−2.27
15 Apr 20257.23%+1.97
31 Mar 20255.26%−1.16
14 Mar 20256.42%−2.89
28 Feb 20259.31%−0.66
14 Feb 20259.97%−0.07
31 Jan 202510.04%+0.20
15 Jan 20259.84%+0.41
31 Dec 20249.43%+0.36
13 Dec 20249.07%−0.62
29 Nov 20249.69%−0.19
15 Nov 20249.88%−0.63
31 Oct 202410.51%−0.01
15 Oct 202410.52%+0.19
30 Sep 202410.33%+0.36
13 Sep 20249.97%−1.59
30 Aug 202411.56%−0.86
15 Aug 202412.42%−0.84
31 Jul 202413.26%−0.94
15 Jul 202414.20%+2.78
28 Jun 202411.42%−0.55
14 Jun 202411.97%−0.80
31 May 202412.77%+0.12
15 May 202412.65%−0.91
30 Apr 202413.56%+0.93
15 Apr 202412.63%−0.63
28 Mar 202413.26%+3.03
15 Mar 202410.23%−0.67
29 Feb 202410.90%−0.57
15 Feb 202411.47%−1.10
31 Jan 202412.57%−0.07
12 Jan 202412.64%−0.10
29 Dec 202312.74%−4.06
15 Dec 202316.80%−6.80
30 Nov 202323.60%−0.71
15 Nov 202324.31%+1.91
31 Oct 202322.40%−6.88
13 Oct 202329.28%−0.87
29 Sep 202330.15%+8.95
15 Sep 202321.20%+3.98
31 Aug 202317.22%+3.20
15 Aug 202314.02%−2.42
31 Jul 202316.44%−1.39
14 Jul 202317.83%+1.20
30 Jun 202316.63%+2.25
15 Jun 202314.38%−0.73
31 May 202315.11%−0.23
15 May 202315.34%−0.45
28 Apr 202315.79%+0.50
14 Apr 202315.29%+0.03
31 Mar 202315.26%+1.75
15 Mar 202313.51%−1.93
28 Feb 202315.44%+2.31
15 Feb 202313.13%+2.39
31 Jan 202310.74%+0.89
13 Jan 20239.85%+3.37
30 Dec 20226.48%+2.14
15 Dec 20224.34%−0.05
30 Nov 20224.39%−0.19
15 Nov 20224.58%−0.83
31 Oct 20225.41%+0.46
14 Oct 20224.95%−1.32
30 Sep 20226.27%+0.79
15 Sep 20225.48%−0.19
31 Aug 20225.67%−0.69
15 Aug 20226.36%−0.12
29 Jul 20226.48%+0.42
15 Jul 20226.06%−0.80
30 Jun 20226.86%−0.39
15 Jun 20227.25%+0.18
31 May 20227.07%−0.85
13 May 20227.92%+0.19
29 Apr 20227.73%+0.73
14 Apr 20227.00%+0.34
31 Mar 20226.66%−1.65
15 Mar 20228.31%−0.28
28 Feb 20228.59%−1.73
15 Feb 202210.32%−0.68
31 Jan 202211.00%+2.64
14 Jan 20228.36%−0.42
31 Dec 20218.78%+3.11
15 Dec 20215.67%+0.02
30 Nov 20215.65%–

Newest first. Scroll inside the table for earlier dates, back to 30 Nov 2021.

Frequently asked questions

How shorted was 2seventy bio, Inc.?
2seventy bio, Inc. left the US market in 2025. Its final reported figure was 4.96% of shares outstanding for settlement date 30 Apr 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 TSVT'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 TSVT's days to cover?
4.40 days for settlement date 30 Apr 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.