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Sound Financial Bancorp, Inc.

SFBC
Exchange
Nasdaq
Industry
Savings Institution, Federally Chartered
SEC CIK
0001541119

In the last 90 days, Sound Financial Bancorp, Inc. insiders filed 0 open-market purchases and 1 sale; 44 institutions reported holding it in 13F filings for Q2 2026, worth $50.6M in total; no superinvestor holds it.

Four kinds of short-selling data, each measuring something different:

  • Short interest: shares sold short and not yet bought back, as of a settlement date. FINRA publishes it twice a month, about eight business days after the settlement date.
  • Daily short volume: shares sold short each day in off-exchange trades reported to FINRA. It counts trades, not open positions, and is published the next day.
  • Fails-to-deliver: shares not delivered by the settlement date. The SEC publishes them twice a month, about two weeks late.
  • ATS (dark pool) volume: weekly volume on alternative trading systems and other off-exchange venues. FINRA publishes it two to four weeks after the week.

More in the glossary.

Short interest

Shares sold short and not yet bought back, from FINRA, on every settlement date in the last two years.

Short interest
3.54K
Shares, settlement Oct 30, 2026
Change
−140
−3.8% vs. Oct 15, 2026
Days to cover
1.75
Short interest ÷ average daily volume
Average daily volume
2.02K
Shares, as reported by FINRA
Short interest by settlement date
Oct 31, 2024: 1,264 sharesNov 15, 2024: 1,509 sharesNov 29, 2024: 2,500 sharesDec 13, 2024: 2,061 sharesDec 31, 2024: 4,833 sharesJan 15, 2025: 5,345 sharesJan 31, 2025: 9,392 sharesFeb 14, 2025: 9,373 sharesFeb 28, 2025: 8,968 sharesMar 14, 2025: 8,892 sharesMar 31, 2025: 8,486 sharesApr 15, 2025: 9,022 sharesApr 30, 2025: 2,944 sharesMay 15, 2025: 2,387 sharesMay 30, 2025: 4,249 sharesJun 13, 2025: 5,462 sharesJun 30, 2025: 23,127 sharesJul 15, 2025: 30,698 sharesJul 31, 2025: 33,322 sharesAug 15, 2025: 31,832 sharesAug 29, 2025: 29,123 sharesSep 15, 2025: 30,970 sharesSep 30, 2025: 22,710 sharesOct 15, 2025: 22,108 sharesOct 31, 2025: 27,360 sharesNov 14, 2025: 26,775 sharesNov 28, 2025: 24,021 sharesDec 15, 2025: 32,138 sharesDec 31, 2025: 27,900 sharesJan 15, 2026: 40,536 sharesJan 30, 2026: 43,588 sharesFeb 13, 2026: 34,671 sharesFeb 27, 2026: 44,134 sharesMar 13, 2026: 46,268 sharesMar 31, 2026: 72,430 sharesApr 15, 2026: 83,058 sharesApr 30, 2026: 78,868 sharesMay 15, 2026: 61,789 sharesMay 29, 2026: 59,412 sharesJun 15, 2026: 68,771 sharesJun 30, 2026: 7,373 sharesJul 15, 2026: 9,027 sharesJul 31, 2026: 8,936 sharesAug 14, 2026: 5,229 sharesAug 31, 2026: 6,259 sharesSep 15, 2026: 5,410 sharesSep 30, 2026: 3,884 sharesOct 15, 2026: 3,677 sharesOct 30, 2026: 3,537 shares
Short interest in SFBC by settlement date
Settlement dateShort interestChangeChange %Avg. daily volumeDays to cover
Oct 30, 20263.54K−140−3.8%2.02K1.75
Oct 15, 20263.68K−207−5.3%2.65K1.39
Sep 30, 20263.88K−1.53K−28.2%4.46K1.00
Sep 15, 20265.41K−849−13.6%8.21K1.00
Aug 31, 20266.26K+1.03K+19.7%3.02K2.07
Aug 14, 20265.23K−3.71K−41.5%26.1K1.00
Jul 31, 20268.94K−91−1.0%8.56K1.04
Jul 15, 20269.03K+1.65K+22.4%13.6K1.00
Jun 30, 20267.37K−61.4K−89.3%29.1K1.00
Jun 15, 202668.8K+9.36K+15.8%5.08K13.55
May 29, 202659.4K−2.38K−3.9%5.55K10.70
May 15, 202661.8K−17.1K−21.7%3.59K17.21
Apr 30, 202678.9K−4.19K−5.0%7.97K9.89
Apr 15, 202683.1K+10.6K+14.7%5.34K15.54
Mar 31, 202672.4K+26.2K+56.5%15.3K4.72
Mar 13, 202646.3K+2.13K+4.8%4.96K9.32
Feb 27, 202644.1K+9.46K+27.3%4.71K9.37
Feb 13, 202634.7K−8.92K−20.5%5.12K6.77
Jan 30, 202643.6K+3.05K+7.5%4.61K9.45
Jan 15, 202640.5K+12.6K+45.3%5.13K7.90
Dec 31, 202527.9K−4.24K−13.2%7.54K3.70
Dec 15, 202532.1K+8.12K+33.8%7.27K4.42
Nov 28, 202524.0K−2.75K−10.3%4.08K5.88
Nov 14, 202526.8K−585−2.1%3.67K7.30
Oct 31, 202527.4K+5.25K+23.8%6.05K4.52
Oct 15, 202522.1K−602−2.7%5.00K4.42
Sep 30, 202522.7K−8.26K−26.7%4.90K4.64
Sep 15, 202531.0K+1.85K+6.3%3.98K7.78
Aug 29, 202529.1K−2.71K−8.5%4.15K7.02
Aug 15, 202531.8K−1.49K−4.5%5.46K5.83
Jul 31, 202533.3K+2.62K+8.6%6.55K5.09
Jul 15, 202530.7K+7.57K+32.7%7.21K4.26
Jun 30, 202523.1K+17.7K+323.4%39.1K1.00
Jun 13, 20255.46K+1.21K+28.6%4.74K1.15
May 30, 20254.25K+1.86K+78.0%3.92K1.08
May 15, 20252.39K−557−18.9%4.03K1.00
Apr 30, 20252.94K−6.08K−67.4%5.24K1.00
Apr 15, 20259.02K+536+6.3%2.83K3.19
Mar 31, 20258.49K−406−4.6%2.19K3.87
Mar 14, 20258.89K−76−0.9%1.59K5.59
Feb 28, 20258.97K−405−4.3%1.66K5.39
Feb 14, 20259.37K−19−0.2%1.14K8.21
Jan 31, 20259.39K+4.05K+75.7%1.56K6.02
Jan 15, 20255.34K+512+10.6%1.40K3.82
Dec 31, 20244.83K+2.77K+134.5%5.51K1.00
Dec 13, 20242.06K−439−17.6%8142.53
Nov 29, 20242.50K+991+65.7%1.50K1.66
Nov 15, 20241.51K+245+19.4%1.55K1.00
Oct 31, 20241.26K−86−6.4%6911.83

Fails-to-deliver

Shares that weren't delivered by the settlement date, from the SEC, for the last 30 dates with fails. The price is the previous day's closing price published by the SEC.

Fails-to-deliver in SFBC by settlement date
Settlement dateSharesPriceValue
Aug 19, 20262,000$47.01$94.0K
Jul 29, 202665$44.32$2.88K
Jul 22, 20262$43.75$87.5
Jul 20, 20267$46.88$328.16
Jul 15, 2026635$46.32$29.4K
Jul 1, 2026991$43.11$42.7K
Jun 30, 2026387$43.07$16.7K
Jun 29, 2026572$43.35$24.8K
Jun 24, 2026551$43.24$23.8K
Jun 23, 2026372$42.99$16.0K
Jun 16, 202627$42.52$1.15K
Jun 15, 20265$43.63$218.15
Jun 2, 202671$41.71$2.96K
May 29, 2026216$43.29$9.35K
May 26, 202629$41.72$1.21K
May 22, 2026158$41.52$6.56K
May 18, 202618$42.17$759.06
May 11, 2026144$42.16$6.07K
May 8, 2026353$42.24$14.9K
May 7, 202699$42.37$4.19K
Apr 29, 202684$41.74$3.51K
Mar 16, 202620$41.06$821.2
Feb 17, 202640$44.30$1.77K
Feb 13, 202618$43.71$786.78
Feb 12, 2026791$43.76$34.6K
Feb 11, 2026303$44.37$13.4K
Feb 10, 2026140$44.08$6.17K
Jan 26, 202664$44.39$2.84K
Nov 28, 20251$44.23$44.23
Nov 12, 20257$45.28$316.96

Daily short volume

Off-exchange short-sale volume, not short interest: shares sold short each day in trades reported to FINRA, for the last 30 trading days.

The short volume ratio isn't a sentiment gauge: market makers sell short to fill buy orders and to hedge, so short sales are usually about half of off-exchange volume.

Off-exchange short volume in SFBC by trade date
Trade dateShort volumeShort exemptOff-exchange volumeShort volume ratio
Nov 10, 2026703221.9%
Nov 9, 20264101,1333.6%
Nov 6, 2026601733.5%
Nov 5, 20265205599.3%
Nov 4, 2026264082232.1%
Nov 3, 202628024111.6%
Nov 2, 2026390077450.4%
Oct 30, 202630744.1%
Oct 29, 2026405230.8%
Oct 28, 2026203026377.2%
Oct 27, 2026601603.8%
Oct 26, 20261003782.6%
Oct 23, 20265808237.0%
Oct 22, 2026153052529.1%
Oct 21, 2026236083728.2%
Oct 20, 2026335072246.4%
Oct 19, 202624301,23819.6%
Oct 16, 20261401,0731.3%
Oct 15, 2026303850.8%
Oct 14, 202637501,57723.8%
Oct 13, 202699068714.4%
Oct 12, 2026401153.5%
Oct 9, 202619501,26315.4%
Oct 8, 202650037813.2%
Oct 7, 20263001,1872.5%
Oct 6, 20261501,0201.5%
Oct 5, 20269401,1018.5%
Oct 2, 2026331097633.9%
Oct 1, 202699101,26078.7%
Sep 30, 20261,25801,61078.1%

ATS (dark pool) volume

Weekly volume on alternative trading systems (ATS) and other off-exchange (OTC) venues, from FINRA, for the last 12 weeks. ATS share is ATS volume ÷ (ATS + OTC volume), not a share of all trading.

Weekly ATS and OTC volume in SFBC
Week ofTierATS sharesATS tradesOther OTC sharesOther OTC tradesATS share
Oct 5, 2026T21,6241783,58218031.2%
Sep 28, 2026T23,2983834,16917544.2%
Sep 21, 2026T21,8451343,27523436.0%
Sep 14, 2026T26974648,5185921.4%
Sep 7, 2026T2984652,96413024.9%
Aug 31, 2026T21,209564,43815721.4%
Aug 24, 2026T2340382,62719011.5%
Aug 17, 2026T25,3792923,72814959.1%
Aug 10, 2026T25,0393042,30815068.6%
Aug 3, 2026T22,945253181,4542,0411.6%
Jul 27, 2026T24,4722853,15231958.7%
Jul 20, 2026T24,6602467,14228939.5%