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HowShorted

SAN short interest NYSE

Banco Santander S.A.. FINRA's reported shares short for this symbol, twice a month by settlement date, shown as the regulator publishes them. No percentage is shown: an SEC filer exists but no defensible share count is available yet.

Shares short
40,768,871
vs previous settlement
โˆ’11,646,969 (-22.2%)
days to cover
5.34
Settlement date
15 Sep 2026

Shares short over time

Aggregate net short position time series for SAN shares short

Days to cover

FINRA's own figure: reported shares short divided by the security's average daily trading volume, published alongside each settlement.

Aggregate net short position time series for SAN days to cover

Fails to deliver

The SEC's fails-to-deliver figure for SAN: 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
9,138
14 Sep 2026
Highest in window
4,731,918
20 Aug 2026
Days with a balance
163
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for Banco Santander S.A. 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 4.7M shares.

History

Every FINRA settlement we hold for SAN, newest first. สณ marks a figure FINRA itself flagged as revised.

Full reported short interest history
Settlement dateShares shortChangeDays to cover
15 Sep 202640,768,871โˆ’11,646,9695.34
31 Aug 202652,415,840โˆ’55,252,2332.11
14 Aug 2026107,668,073+18,850,5547.32
31 Jul 202688,817,519+2,051,4558.66
15 Jul 202686,766,064โˆ’211,1089.74
30 Jun 202686,977,172โˆ’4,430,82910.86
15 Jun 202691,408,001โˆ’3,952,94610.72
29 May 202695,360,947+12,056,9548.86
15 May 202683,303,993+4,583,95812.70
30 Apr 202678,720,035+632,79210.69
15 Apr 202678,087,243โˆ’3,348,3697.61
31 Mar 202681,435,612+7,331,8706.27
13 Mar 202674,103,742+15,623,6303.45
27 Feb 202658,480,112+16,495,7913.73
13 Feb 202641,984,321+38,311,6731.64
30 Jan 20263,672,648โˆ’233,3261.00
15 Jan 20263,905,974+569,0391.02
31 Dec 20253,336,935โˆ’168,4841.43
15 Dec 20253,505,419+815,5581.22
28 Nov 20252,689,861+63,0971.00
14 Nov 20252,626,764+160,9461.00
31 Oct 20252,465,818โˆ’1,838,0281.00
15 Oct 20254,303,846โˆ’1,122,2991.23
30 Sep 20255,426,145โˆ’2,803,0611.38
15 Sep 20258,229,206โˆ’596,9202.08
29 Aug 20258,826,126+1,052,2062.38
15 Aug 20257,773,920+2,346,5281.74
31 Jul 20255,427,392โˆ’4,865,1911.01
15 Jul 202510,292,583+1,463,2331.22
30 Jun 20258,829,350+5,398,4661.02
13 Jun 20253,430,884โˆ’1,105,8671.00
30 May 20254,536,751โˆ’1,406,4501.00
15 May 20255,943,201+505,1441.29
30 Apr 20255,438,057โˆ’287,3651.05
15 Apr 20255,725,422+933,2331.00
31 Mar 20254,792,189โˆ’148,2361.00
14 Mar 20254,940,425โˆ’932,2131.00
28 Feb 20255,872,638โˆ’450,9351.00
14 Feb 20256,323,573+24,0741.36
31 Jan 20256,299,499+11,2422.06
15 Jan 20256,288,257+9,5701.90
31 Dec 20246,278,687+106,7631.87
13 Dec 20246,171,924โˆ’3,167,1232.32
29 Nov 20249,339,047+2,650,1563.30
15 Nov 20246,688,891โˆ’697,6082.01
31 Oct 20247,386,499โˆ’526,2252.19
15 Oct 20247,912,724+856,6693.38
30 Sep 20247,056,055โˆ’1,842,1143.24
13 Sep 20248,898,169+1,511,6373.68
30 Aug 20247,386,532โˆ’328,1953.59
15 Aug 20247,714,727+915,1382.60
31 Jul 20246,799,589+834,3953.14
15 Jul 20245,965,194โˆ’375,8644.02
28 Jun 20246,341,058โˆ’1,702,1962.58
14 Jun 20248,043,254+1,149,5903.34
31 May 20246,893,664โˆ’54,7703.60
15 May 20246,948,434+628,6383.04
30 Apr 20246,319,796โˆ’412,2871.22
15 Apr 20246,732,083+631,7522.43
28 Mar 20246,100,331โˆ’259,5961.98
15 Mar 20246,359,927+101,5932.51
29 Feb 20246,258,334โˆ’206,9651.98
15 Feb 20246,465,299+98,4571.88
31 Jan 20246,366,842โˆ’2,279,9212.05
12 Jan 20248,646,763+296,1952.97
29 Dec 20238,350,568โˆ’627,5373.30
15 Dec 20238,978,105+242,0162.85
30 Nov 20238,736,089+883,9763.82
15 Nov 20237,852,113โˆ’76,3342.93
31 Oct 20237,928,447+161,7132.26
13 Oct 20237,766,734+393,3642.06
29 Sep 20237,373,370โˆ’55,9112.18
15 Sep 20237,429,281โˆ’100,8502.90
31 Aug 20237,530,131โˆ’48,5962.71
15 Aug 20237,578,727โˆ’375,2172.47
31 Jul 20237,953,944โˆ’207,8822.27
14 Jul 20238,161,826โˆ’935,1173.04
30 Jun 20239,096,943+466,1253.01
15 Jun 20238,630,818โˆ’947,9233.07
31 May 20239,578,741โˆ’689,5583.62
15 May 202310,268,299+787,2172.93
28 Apr 20239,481,082+1,309,3742.72
14 Apr 20238,171,708+561,8012.34
31 Mar 20237,609,907+193,9531.21
15 Mar 20237,415,954+220,5521.00
28 Feb 20237,195,402โˆ’475,1461.38
15 Feb 20237,670,548โˆ’767,9261.48
31 Jan 20238,438,474+4,041,2871.86
13 Jan 20234,397,187+540,7131.26
30 Dec 20223,856,474โˆ’2,867,8421.04
15 Dec 20226,724,316โˆ’237,5481.81
30 Nov 20226,961,864โˆ’2,711,6991.97
15 Nov 20229,673,563+1,397,8211.95
31 Oct 20228,275,742+2,900,7071.65
14 Oct 20225,375,035+468,9031.06
30 Sep 20224,906,132โˆ’473,2521.00
15 Sep 20225,379,384โˆ’189,0501.00
31 Aug 20225,568,434+404,2961.11
15 Aug 20225,164,138โˆ’176,1071.19
29 Jul 20225,340,245โˆ’844,3541.00
15 Jul 20226,184,599+436,2271.00
30 Jun 20225,748,372+1,191,2171.00
15 Jun 20224,557,155+1,156,3251.00
31 May 20223,400,830+11,4361.00
13 May 20223,389,394+22,4691.00
29 Apr 20223,366,925+679,0381.00
14 Apr 20222,687,887+512,6051.00
31 Mar 20222,175,282โˆ’1,157,5681.00
15 Mar 20223,332,850โˆ’4,368,0431.00
28 Feb 20227,700,893โˆ’254,0671.00
15 Feb 20227,954,960+3,967,8291.14
31 Jan 20223,987,131+162,2341.00
14 Jan 20223,824,897+1,741,0901.00
31 Dec 20212,083,807โˆ’558,0491.00
15 Dec 20212,641,856โˆ’1,706,4221.00
30 Nov 20214,348,278+310,3691.00
15 Nov 20214,037,909โˆ’2,621,7081.48
29 Oct 20216,659,617+1,372,1912.10
15 Oct 20215,287,426โˆ’2,059,2301.16
30 Sep 20217,346,656โˆ’727,7682.01
15 Sep 20218,074,424โˆ’4,235,1232.32
31 Aug 202112,309,547โˆ’935,7113.17
13 Aug 202113,245,258โˆ’1,044,2324.09
30 Jul 202114,289,490โˆ’1,109,0253.09
15 Jul 202115,398,515โˆ’3,378,1143.59
30 Jun 202118,776,629โˆ’850,8103.27
15 Jun 202119,627,439สณ+12,064,7822.37
28 May 20217,562,657โˆ’384,6901.96
14 May 20217,947,347+1,585,0761.44
30 Apr 20216,362,271โˆ’195,0941.28
15 Apr 20216,557,365โˆ’456,1721.97
31 Mar 20217,013,537โˆ’225,6601.45
15 Mar 20217,239,197โˆ’663,5381.12
26 Feb 20217,902,735+2,355,9691.00
12 Feb 20215,546,766+574,0051.01
29 Jan 20214,972,761โˆ’1,745,6121.01
15 Jan 20216,718,373โˆ’3,581,0281.00
31 Dec 202010,299,401+867,4391.55
15 Dec 20209,431,962+1,623,0251.00
30 Nov 20207,808,937โˆ’2,976,4591.08
13 Nov 202010,785,396โˆ’5,849,7701.00
30 Oct 202016,635,166+933,5492.39
15 Oct 202015,701,617+1,196,9682.53
30 Sep 202014,504,649+1,411,0711.25
15 Sep 202013,093,578+1,136,5361.72
31 Aug 202011,957,042โˆ’1,602,4141.95
14 Aug 202013,559,456+3,131,5781.95
31 Jul 202010,427,878+1,166,4381.00
15 Jul 20209,261,440+550,8851.84
30 Jun 20208,710,555โˆ’3,263,1941.21
15 Jun 202011,973,749+1,252,5841.01
29 May 202010,721,165+4,824,2551.00
15 May 20205,896,910สณโˆ’3,445,5091.12
30 Apr 20209,342,419+1,158,9611.43
15 Apr 20208,183,458โˆ’687,2481.30
31 Mar 20208,870,706โˆ’9,386,5351.00
13 Mar 202018,257,241+4,923,6831.04
28 Feb 202013,333,558+5,243,3201.03
14 Feb 20208,090,238โˆ’3,131,6241.16
31 Jan 202011,221,862+1,787,2291.28
15 Jan 20209,434,633โˆ’163,3561.39
31 Dec 20199,597,989โˆ’888,2951.74
13 Dec 201910,486,284โˆ’2,513,4461.42
29 Nov 201912,999,730+152,8162.11
15 Nov 201912,846,914โˆ’4,690,7581.68
31 Oct 201917,537,672+2,042,8491.92
15 Oct 201915,494,823+2,969,8731.70
30 Sep 201912,524,950โˆ’74,533,2661.10
13 Sep 201987,058,216+20,308,6465.32
30 Aug 201966,749,570+10,936,6244.56
15 Aug 201955,812,946+16,618,7473.15
31 Jul 201939,194,199+12,998,3963.93
15 Jul 201926,195,803+7,472,4303.35
28 Jun 201918,723,373โˆ’92,9282.42
14 Jun 201918,816,301โˆ’5,256,5871.70
31 May 201924,072,888+1,554,0432.27
15 May 201922,518,845+1,693,8292.19
30 Apr 201920,825,016+13,634,5092.16
15 Apr 20197,190,507+762,6791.00
29 Mar 20196,427,828+1,998,1571.00
15 Mar 20194,429,671+189,4371.00
28 Feb 20194,240,234โˆ’2,035,3431.00
15 Feb 20196,275,577+1,550,3641.00
31 Jan 20194,725,213โˆ’1,799,1161.00
15 Jan 20196,524,329โˆ’4,540,1201.00
31 Dec 201811,064,449โˆ’5,280,3551.01
14 Dec 201816,344,804โˆ’3,658,2991.78
30 Nov 201820,003,103โˆ’221,6313.28
15 Nov 201820,224,734+7,820,4692.00
31 Oct 201812,404,265+2,458,4491.10
15 Oct 20189,945,816โˆ’1,010,8041.36
28 Sep 201810,956,620+3,804,7171.56
14 Sep 20187,151,903โˆ’1,422,7631.32
31 Aug 20188,574,666+432,0241.61
15 Aug 20188,142,642+1,164,1961.02
31 Jul 20186,978,446โˆ’4,057,0091.00
13 Jul 201811,035,455โˆ’3,640,3211.73
29 Jun 201814,675,776+1,466,0322.03
15 Jun 201813,209,744+1,650,0311.50
31 May 201811,559,713+3,305,5071.16
15 May 20188,254,206โˆ’1,980,0572.37
30 Apr 201810,234,263โˆ’2,668,9212.17
13 Apr 201812,903,184+3,036,9172.03
29 Mar 20189,866,267โˆ’2,418,9711.03
15 Mar 201812,285,238+1,092,9282.04
28 Feb 201811,192,310+3,856,8611.00
15 Feb 20187,335,449+2,169,6381.00
31 Jan 20185,165,811+435,5531.07
12 Jan 20184,730,258โˆ’228,8351.03
29 Dec 20174,959,093โ€“1.55

Scroll inside the table for earlier settlements, back to 29 Dec 2017.

Questions

Frequently asked questions

What is SAN's short interest?
40,768,871 shares short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report, down 11,646,969 from the previous settlement.
Why is there no percentage for SAN?
Because no defensible share count exists to divide by: an SEC filer exists but no defensible share count is available yet. The symbol maps to an SEC filer, but its share count cannot be used yet. A newly listed company needs two cover-page counts on file before the first is trusted; a split or an unexplained jump pauses publication until a fresh SEC count corroborates it; a secondary share class publishes under the company's primary line; and a foreign filer's short count is in depositary-share units. This page upgrades to a percentage automatically once a defensible count exists.
What is SAN's days to cover?
5.34 days for settlement date 15 Sep 2026: FINRA's own short interest ratio, the reported shares short divided by average daily trading volume, published in the same file and shown verbatim. We hold no volume data ourselves.
Is this the short float?
No. This page shows FINRA's share count only. Short float divides that count by the public float, and short interest as we publish it elsewhere divides it by shares outstanding from SEC filings. Neither denominator is available for this line, so neither ratio is shown.
How often does this update?
FINRA member firms report short positions as of the 15th and the last business day of each month, and FINRA publishes the consolidated figures about nine business days later. We ingest each file the day it appears and re-read recent settlements for revisions.

Ranked companies with a percentage: most shorted US stocks. Other symbols with counts only: shares short without a percentage. Browse by name: US companies A to Z.