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HowShorted

How shorted is Waters Corp? WAT

#2,332most shorted US stockof 3,805 ranked stocks, more shorted than 38%

3.36%
of shares outstanding reported short · settlement date 15 Sep 2026
vs previous report
+0.01
5 reports (~10 weeks)
−0.41
days to cover
5.78
Aggregate net short position time series for Waters Corp

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 Waters Corp 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
4 Aug 20264.24% 31 Jul 20263.70% 14 Aug 2026−0.54
5 May 20265.76% 30 Apr 20264.01% 15 May 2026−1.75
9 Feb 20263.78% 30 Jan 20264.48% 13 Feb 2026+0.70
4 Nov 20253.78% 31 Oct 20253.85% 14 Nov 2025+0.07
4 Aug 20254.00% 31 Jul 20254.03% 15 Aug 2025+0.03
6 May 20252.68% 30 Apr 20252.80% 15 May 2025+0.12
12 Feb 20252.70% 31 Jan 20252.19% 14 Feb 2025−0.51
1 Nov 20243.62% 31 Oct 20243.51% 15 Nov 2024−0.11

Fails to deliver

The SEC's fails-to-deliver figure for WAT: the aggregate net balance of shares that failed to be delivered at each settlement date, published by the SEC twice a month and shown here verbatim for the trailing window. A balance is not a daily flow, and a fail has many ordinary causes; the SEC says it cannot guarantee the accuracy of the data. See what fails to deliver are and the largest balances today.

Latest balance
405
14 Sep 2026
Highest in window
123,728
11 Feb 2026
Days with a balance
99
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for Waters Corp fails to deliver

Source: U.S. Securities and Exchange Commission, fails-to-deliver data (public domain). Only settlement days with a positive balance appear; the largest balance in the window was 124K shares.

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Sector: Healthcare

History

Full reported short interest history
Settlement dateShort %Change
15 Sep 20263.36%+0.01
31 Aug 20263.35%−0.35
14 Aug 20263.70%−0.54
31 Jul 20264.24%+0.51
15 Jul 20263.73%−0.04
30 Jun 20263.77%−0.82
15 Jun 20264.59%+0.03
29 May 20264.56%+0.55
15 May 20264.01%−1.75
30 Apr 20265.76%−0.51
15 Apr 20266.27%+0.69
31 Mar 20265.58%+1.26
13 Mar 20264.32%0.00
27 Feb 20264.32%−0.16
13 Feb 20264.48%+0.70
30 Jan 20263.78%+0.37
15 Jan 20263.41%−0.16
31 Dec 20253.57%−0.31
15 Dec 20253.88%−0.08
28 Nov 20253.96%+0.11
14 Nov 20253.85%+0.07
31 Oct 20253.78%−0.22
15 Oct 20254.00%+0.77
30 Sep 20253.23%−0.62
15 Sep 20253.85%−0.08
29 Aug 20253.93%−0.10
15 Aug 20254.03%+0.03
31 Jul 20254.00%+0.61
15 Jul 20253.39%+0.27
30 Jun 20253.12%+0.23
13 Jun 20252.89%−0.16
30 May 20253.05%+0.25
15 May 20252.80%+0.12
30 Apr 20252.68%+0.03
15 Apr 20252.65%+0.20
31 Mar 20252.45%−0.06
14 Mar 20252.51%−0.21
28 Feb 20252.72%+0.53
14 Feb 20252.19%−0.51
31 Jan 20252.70%−0.14
15 Jan 20252.84%−0.27
31 Dec 20243.11%−0.22
13 Dec 20243.33%−0.24
29 Nov 20243.57%+0.06
15 Nov 20243.51%−0.11
31 Oct 20243.62%−0.31
15 Oct 20243.93%−0.23
30 Sep 20244.16%−0.48
13 Sep 20244.64%−0.11
30 Aug 20244.75%−0.01
15 Aug 20244.76%+0.43
31 Jul 20244.33%−0.45
15 Jul 20244.78%−0.59
28 Jun 20245.37%+0.03
14 Jun 20245.34%−0.59
31 May 20245.93%−0.43
15 May 20246.36%−0.59
30 Apr 20246.95%+0.29
15 Apr 20246.66%+0.25
28 Mar 20246.41%−0.22
15 Mar 20246.63%+0.29
29 Feb 20246.34%−0.39
15 Feb 20246.73%−0.31
31 Jan 20247.04%+0.21
12 Jan 20246.83%−0.53
29 Dec 20237.36%+0.20
15 Dec 20237.16%−0.11
30 Nov 20237.27%+0.04
15 Nov 20237.23%+0.56
31 Oct 20236.67%+0.41
13 Oct 20236.26%+0.22
29 Sep 20236.04%−0.09
15 Sep 20236.13%+0.09
31 Aug 20236.04%+0.78
15 Aug 20235.26%−0.08
31 Jul 20235.34%+0.25
14 Jul 20235.09%+0.35
30 Jun 20234.74%+0.78
15 Jun 20233.96%−0.05
31 May 20234.01%+0.50
15 May 20233.51%−0.29
28 Apr 20233.80%−0.10
14 Apr 20233.90%+0.33
31 Mar 20233.57%+0.70
15 Mar 20232.87%+0.46
28 Feb 20232.41%+0.14
15 Feb 20232.27%−0.30
31 Jan 20232.57%−0.05
13 Jan 20232.62%+0.17
30 Dec 20222.45%−0.36
15 Dec 20222.81%+0.08
30 Nov 20222.73%+0.21
15 Nov 20222.52%+0.03
31 Oct 20222.49%−0.03
14 Oct 20222.52%+0.05
30 Sep 20222.47%+0.23
15 Sep 20222.24%+0.25
31 Aug 20221.99%+0.18
15 Aug 20221.81%−0.26
29 Jul 20222.07%+0.35
15 Jul 20221.72%−0.25
30 Jun 20221.97%−0.45
15 Jun 20222.42%−0.24
31 May 20222.66%−0.07
13 May 20222.73%−0.17
29 Apr 20222.90%−0.15
14 Apr 20223.05%+0.20
31 Mar 20222.85%−0.43
15 Mar 20223.28%−0.08
28 Feb 20223.36%−0.30
15 Feb 20223.66%+0.23
31 Jan 20223.43%+0.07
14 Jan 20223.36%+0.18
31 Dec 20213.18%+0.14
15 Dec 20213.04%0.00
30 Nov 20213.04%+0.33
15 Nov 20212.71%+0.27
29 Oct 20212.44%−0.11
15 Oct 20212.55%+0.09
30 Sep 20212.46%0.00
15 Sep 20212.46%+0.20
31 Aug 20212.26%0.00
13 Aug 20212.26%+0.28
30 Jul 20211.98%−0.13
15 Jul 20212.11%−0.01
30 Jun 20212.12%+0.50
15 Jun 20211.62%−0.09
28 May 20211.71%−0.13
14 May 20211.84%+0.15
30 Apr 20211.69%−0.15
15 Apr 20211.84%−0.28
31 Mar 20212.12%+0.16
15 Mar 20211.96%−0.01
26 Feb 20211.97%+0.27
12 Feb 20211.70%−0.54
29 Jan 20212.24%−0.20
15 Jan 20212.44%−0.23
31 Dec 20202.67%−0.41
15 Dec 20203.08%+0.05
30 Nov 20203.03%+0.23
13 Nov 20202.80%−0.02
30 Oct 20202.82%−0.58
15 Oct 20203.40%−0.27
30 Sep 20203.67%−0.28
15 Sep 20203.95%−0.20
31 Aug 20204.15%−0.44
14 Aug 20204.59%+0.31
31 Jul 20204.28%−0.85
15 Jul 20205.13%−0.39
30 Jun 20205.52%−1.44
15 Jun 20206.96%−0.51
29 May 20207.47%+0.13
15 May 20207.34%+0.37
30 Apr 20206.97%+0.50
15 Apr 20206.47%−0.04
31 Mar 20206.51%−0.22
13 Mar 20206.73%−0.57
28 Feb 20207.30%−0.27
14 Feb 20207.57%−0.99
31 Jan 20208.56%−0.90
15 Jan 20209.46%+0.48
31 Dec 20198.98%+0.50
13 Dec 20198.48%+0.44
29 Nov 20198.04%−0.06
15 Nov 20198.10%−0.31
31 Oct 20198.41%+0.40
15 Oct 20198.01%−0.37
30 Sep 20198.38%+0.33
13 Sep 20198.05%+0.50
30 Aug 20197.55%+0.15
15 Aug 20197.40%+1.13
31 Jul 20196.27%+0.71
15 Jul 20195.56%+0.09
28 Jun 20195.47%+0.33
14 Jun 20195.14%+0.42
31 May 20194.72%−0.25
15 May 20194.97%+0.33
30 Apr 20194.64%+0.50
15 Apr 20194.14%+0.12
29 Mar 20194.02%−0.07
15 Mar 20194.09%+0.09
28 Feb 20194.00%−0.51
15 Feb 20194.51%−0.37
31 Jan 20194.88%0.00
15 Jan 20194.88%−0.06
31 Dec 20184.94%+0.34
14 Dec 20184.60%−0.29
30 Nov 20184.89%−0.15
15 Nov 20185.04%+0.47
31 Oct 20184.57%+0.29
15 Oct 20184.28%−0.10
28 Sep 20184.38%0.00
14 Sep 20184.38%+0.44
31 Aug 20183.94%−0.40
15 Aug 20184.34%−0.08
31 Jul 20184.42%−0.36
13 Jul 20184.78%+0.46
29 Jun 20184.32%+0.01
15 Jun 20184.31%+0.73
31 May 20183.58%+0.26
15 May 20183.32%+0.38
30 Apr 20182.94%+0.12
13 Apr 20182.82%+0.02
29 Mar 20182.80%−0.17
15 Mar 20182.97%−0.09
28 Feb 20183.06%−0.24
15 Feb 20183.30%+0.35
31 Jan 20182.95%−1.31
12 Jan 20184.26%+0.27
29 Dec 20173.99%–

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

Frequently asked questions

How shorted is Waters Corp right now?
3.36% of Waters Corp's (WAT) shares outstanding were reported short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report. That makes it the 2,332nd most shorted US stock, out of 3,805 we rank.
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 WAT'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 WAT's days to cover?
5.78 days for settlement date 15 Sep 2026: 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.