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© 2026 Insider Trade Flow. Not financial advice. All data sourced from public SEC filings, 13F reports, and Polymarket.
29 Active Clusters

Cluster Buying
Signals

When multiple insiders buy the same stock within a short window, it often signals exceptional confidence. Track real-time cluster activity across all sectors.

29
Buy Clusters
0
Sell Clusters
2
Strong Signals
$246.9M
Total Volume
Period:
7 Days30 Days90 Days
Type:
Buy ClustersSell ClustersAll
TAIWAN SEMICONDUCTOR MANUFACTURING CO LTDTSM
Unknown·Within 2 weeks·May 8, 2026 - May 20, 2026
28
Insiders
$118.7K
Volume
Strong Signal
CFO Participating
Wei Che-Chia
Executive
$11.5K
160 shares

What is Cluster Buying?

Cluster buying occurs when multiple corporate insiders purchase shares of their company within a short time window. This pattern is considered one of the strongest signals of insider confidence.

When three or more executives independently decide to buy shares around the same time, it suggests they collectively believe the stock is undervalued. Research shows that cluster buys with CEO or CFO participation tend to have even stronger predictive value.

Signal Strength Scoring

  • +10 points3 or more insiders participating
  • +5 pointsCEO participating
  • +5 pointsCFO participating
  • +5 pointsAverage purchase over $200K
  • -5 pointsIncludes 10b5-1 planned trades

Get Cluster Buy Alerts

Be the first to know when multiple insiders start buying. Set up real-time alerts for cluster activity.

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Tien Bor-Zen
VP
$6.7K
17 shares
Chin Yung-Pei
EVP and Co-COO
$5.4K
75 shares
Mii Yuh-Jier
EVP and Co-COO
$5.4K
75 shares
Hou Yung-Chin
SVP and Deputy Co-COO
$4.7K
66 shares
Zhang Kevin Xiaoqiang
SVP and Deputy Co-COO
$4.7K
66 shares
+22 more insiders
View TSM Company Page
Flutter Entertainment plcFLUT
Unknown·18 days·May 8, 2026 - May 26, 2026
8
Insiders
$133.8M
Volume
Strong Signal
CEO Participating
DART KENNETH BRYAN
Executive
$132.8M
1,395,704 shares
Taylor Daniel Mark
President FLUT; CEO FLUT Intl
$251.6K
2,624 shares
Jackson Jeremy Peter
Executive
$244.7K
2,400 shares
BRYANT JOHN A
Executive
$200.6K
1,950 shares
LIU DON H
Chief Legal Officer
$150.0K
1,459.43 shares
Bishop James Philip
Chief Operating Officer
$99.8K
1,000 shares
+2 more insiders
View FLUT Company Page
Vital Farms, Inc.VITL
Unknown·6 days·May 13, 2026 - May 19, 2026
11
Insiders
$422.0K
Volume
Moderate Signal
CEO Participating
Holland Joseph Michael
Chief Supply Chain Officer
$99.9K
12,484 shares
Cyr William B.
Executive
$51.1K
6,000 shares
Flanagan Glenda J
Executive
$50.8K
6,100 shares
Ruiz Gisel
Executive
$50.0K
6,151 shares
Coon Stephanie
Chief Strategy Officer
$49.6K
5,895 shares
Pappas Peter Nicholas
CSO and President, Eggs
$29.8K
3,500 shares
+5 more insiders
View VITL Company Page
Granite Ridge Resources, Inc.GRNT
Unknown·Within 2 weeks·May 13, 2026 - May 27, 2026
5
Insiders
$675.9K
Volume
Moderate Signal
CEO ParticipatingCFO Participating
Perry Griffin
Executive
$549.0K
100,000 shares
Farquharson Tyler
President and CEO
$51.5K
10,000 shares
MCCARTNEY JOHN
Executive
$39.6K
7,000 shares
Kettler Ronald Kyle
Chief Financial Officer
$30.5K
6,000 shares
Everard Michele J
Executive
$5.3K
1,000 shares
View GRNT Company Page
Odyssey Therapeutics, Inc.ODTX
Unknown·3 days·May 8, 2026 - May 11, 2026
4
Insiders
$40.2M
Volume
Moderate Signal
CFO Participating
Li Nan (LN)
Executive
$20.0M
1,111,111 shares
Dimension Capital II, L.P.
Executive
$20.0M
1,111,111 shares
Chu Shelley
Executive
$200.0K
11,111 shares
Haas Jason
Chief Financial Officer
$20.0K
1,000 shares
View ODTX Company Page
AGI IncAGBK
Unknown·7 days·May 7, 2026 - May 14, 2026
5
Insiders
$213.3K
Volume
Moderate Signal
TESTA MARCIANO
Executive
$200.3K
28,000 shares
De Farias Daniel Monteiro
Chief Products Officer
$5.0K
692.52 shares
Morais Rafael De Oliveira
Risk & Controllership Officer
$3.1K
435.57 shares
ALOE VINICIUS BIRKELAND
Chief Technology Officer
$3.0K
406.67 shares
GIRARDI MATHEUS
Chief Sales Officer
$1.9K
270 shares
View AGBK Company Page
Chiron Real Estate Inc.XRN
Unknown·1 day·May 11, 2026 - May 12, 2026
5
Insiders
$334.2K
Volume
Moderate Signal
CFO Participating
KIERNAN ROBERT J
CFO and Treasurer
$100.5K
3,000 shares
Wittman Lori
Executive
$99.5K
2,940 shares
Holley Danica
COO
$50.6K
1,490 shares
Barber Jamie Allen
General Counsel and Secretary
$49.6K
1,481 shares
Crowley Paula
Executive
$34.0K
1,000 shares
View XRN Company Page
TON Strategy CoTONX
Unknown·1 day·May 14, 2026 - May 15, 2026
4
Insiders
$71.8K
Volume
Moderate Signal
CEO ParticipatingCFO Participating
Wilson Kevin Mark
Chief Executive Officer
$29.4K
8,020 shares
Olsen Sarah Josephine
CFO & COO
$26.9K
7,440 shares
Sohn Evan
Executive
$9.9K
2,770 shares
Marbach Mary
General Counsel/Corp Secretary
$5.6K
1,600 shares
View TONX Company Page
Fundrise Income Real Estate Fund, LLCNONE
Unknown·16 days·May 11, 2026 - May 27, 2026
8
Insiders
$46.7M
Volume
Moderate Signal
Silver Point Capital L.P.
Executive
$36.0M
397,500 shares
Neuberger Berman Group LLC
Executive
$5.6M
547,487.75 shares
BANKERS LIFE & CASUALTY CO
Executive
$5.0M
494,071.15 shares
BELL JACK W
Executive
$100.1K
1,221 shares
Monte Mark David
Executive
$1.0K
98.33 shares
Booth Richard Whitaker
Executive
$1.0K
82.6 shares
+2 more insiders
View NONE Company Page
SIMILARWEB LTD.SMWB
Unknown·3 days·May 18, 2026 - May 21, 2026
3
Insiders
$613.6K
Volume
Moderate Signal
Beit-On Harel Moshe
Executive
$291.8K
75,000 shares
Eilam Barak
Executive
$193.0K
50,000 shares
Rapaport-Dagim Tamar
Executive
$128.9K
40,000 shares
View SMWB Company Page
STURM RUGER & CO INCRGR
Unknown·Within 2 weeks·May 12, 2026 - May 20, 2026
3
Insiders
$288.6K
Volume
Moderate Signal
CEO Participating
WIDMAN PHILLIP
Executive
$190.0K
5,000 shares
Seyfert Todd William
President & CEO
$58.7K
1,500 shares
Pettet Bruce T.
Executive
$39.9K
1,000 shares
View RGR Company Page
VIDA Global Inc.VIDA
Unknown·4 days·May 14, 2026 - May 18, 2026
4
Insiders
$3.3M
Volume
Moderate Signal
TVP Bitcoin Venture GP II, L.L.C.
Executive
$1.5M
375,000 shares
Calicott Christopher Shane
Executive
$1.5M
375,000 shares
Braverman Alan M
Executive
$249.1K
63,000 shares
Romaine Henry S Jr.
Executive
$25.0K
6,300 shares
View VIDA Company Page
Goosehead Insurance, Inc.GSHD
Unknown·4 days·May 14, 2026 - May 18, 2026
3
Insiders
$491.3K
Volume
Moderate Signal
CEO Participating
Thornthwaite Martin Ellis
General Counsel
$207.5K
5,000 shares
Miller Mark
Executive
$184.4K
5,000 shares
Jones Mark E. Jr.
President & COO
$99.4K
2,650 shares
View GSHD Company Page
HARROW, INC.HROW
Unknown·4 days·May 14, 2026 - May 18, 2026
4
Insiders
$468.7K
Volume
Moderate Signal
CEO Participating
BAUM MARK L
Executive
$302.0K
10,000 shares
BOLL ANDREW R.
PRESIDENT AND CFO
$104.7K
3,500 shares
Graves Adrienne L
Executive
$31.1K
1,000 shares
SILVERNAIL LAUREN P
Executive
$31.0K
1,000 shares
View HROW Company Page
VALVOLINE INCVVV
Unknown·1 day·May 14, 2026 - May 15, 2026
3
Insiders
$450.9K
Volume
Moderate Signal
CFO Participating
WILLIS J KEVIN
Chief Financial Officer
$318.0K
10,000 shares
Freeland Richard Joseph
Executive
$100.3K
3,100 shares
Slater Jennifer Lynn
Executive
$32.5K
1,000 shares
View VVV Company Page
HUDSON TECHNOLOGIES INC /NYHDSN
Unknown·6 days·May 13, 2026 - May 19, 2026
6
Insiders
$111.5K
Volume
Weak Signal
CFO Participating
Sheriff Alan
Executive
$25.4K
5,200 shares
Feeler Jeffrey R
Executive
$25.1K
5,100 shares
Gaglione Kenneth
Executive
$24.5K
5,000 shares
Prouty Eric A
Executive
$24.2K
5,000 shares
Bertaux Brian J.
Chief Financial Officer
$9.7K
2,000 shares
Bulgarino Nicole E
Executive
$2.7K
550 shares
View HDSN Company Page
Installed Building Products, Inc.IBP
Unknown·Same day·May 11, 2026 - May 11, 2026
3
Insiders
$345.4K
Volume
Weak Signal
Wheeler Brad A
Chief Operating Officer
$149.7K
716 shares
Hilsheimer Lawrence A.
Executive
$98.0K
475 shares
Niswonger Jason R
Chief Admin. & Sustainability
$97.7K
455 shares
View IBP Company Page
NORWOOD BROADCASTING CORPUBCP
Unknown·Same day·May 27, 2026 - May 27, 2026
4
Insiders
$83.7K
Volume
Weak Signal
CEO Participating
EVERSON SCOTT A
Chairman Pres and CEO
$33.0K
2,213 shares
Hendershot Brian M
Executive
$31.1K
2,080 shares
HOOPINGARNER JOHN M
Executive
$13.9K
931 shares
Branstetter Matthew Fredrick
Chief Operating Officer
$5.7K
380 shares
View UBCP Company Page
Outlook Therapeutics, Inc.OTLK
Unknown·1 day·May 26, 2026 - May 27, 2026
4
Insiders
$243.6K
Volume
Weak Signal
HILZINGER KURT J
Executive
$176.5K
400,000 shares
Sukhtian Faisal Ghiath
Executive
$50.0K
122,174 shares
Haddadin Yezan Munther
Executive
$15.0K
34,000 shares
THURMAN RANDY H
Executive
$2.1K
5,000 shares
View OTLK Company Page
HCW Biologics Inc.HCWB
Unknown·Same day·May 22, 2026 - May 22, 2026
3
Insiders
$430.0K
Volume
Weak Signal
CFO Participating
GARRETT SCOTT T
Executive
$250.0K
355,872 shares
Wong Hing C
Executive
$160.0K
227,758 shares
Byam Rebecca
Chief Financial Officer
$20.0K
28,470 shares
View HCWB Company Page
Orchestra BioMed Holdings, Inc.OBIO
Unknown·4 days·May 14, 2026 - May 18, 2026
3
Insiders
$138.9K
Volume
Weak Signal
Fain Eric S
Executive
$82.6K
20,000 shares
Aryeh Jason
Executive
$37.5K
9,636 shares
Hochman David P
Executive
$18.9K
5,000 shares
View OBIO Company Page
InfuSystem Holdings, IncINFU
Unknown·3 days·May 8, 2026 - May 11, 2026
3
Insiders
$131.5K
Volume
Weak Signal
CFO Participating
Steele Barry G
Executive VP and CFO
$60.9K
7,000 shares
GENDRON PAUL ANDREW
Executive
$44.4K
5,000 shares
Lachance Carrie
Executive
$26.1K
3,000 shares
View INFU Company Page
Shake Shack Inc.SHAK
Unknown·Same day·May 15, 2026 - May 15, 2026
4
Insiders
$2.6M
Volume
Weak Signal
Meyer Daniel Harris
Executive
$2.0M
32,258 shares
Lynch Robert
Executive
$301.9K
5,000 shares
Balbale Sumaiya
Executive
$249.9K
4,068 shares
Flug Jeffrey
Executive
$61.3K
1,000 shares
View SHAK Company Page
EagleRock Land, LLCEROK
Unknown·Same day·May 15, 2026 - May 15, 2026
4
Insiders
$9.6M
Volume
Weak Signal
Wallace Michael Wayne
Executive
$4.6M
250,000 shares
Lott Jeff Slaughter
Executive
$4.6M
250,000 shares
Reed Stephanie L
Executive
$250.0K
13,513 shares
Kumar Raj
Executive
$100.0K
5,405 shares
View EROK Company Page
GPGI, Inc.GPGI
Unknown·2 days·May 12, 2026 - May 14, 2026
3
Insiders
$200.9K
Volume
Weak Signal
Mikkilineni Krishna
Executive
$100.0K
8,106.2 shares
Loree Rebecca Corbin
Executive
$50.5K
3,925 shares
Schoen Kurt
See remarks
$50.3K
4,000 shares
View GPGI Company Page
Mobia Medical, Inc.MOBI
Unknown·Same day·May 11, 2026 - May 11, 2026
3
Insiders
$2.0M
Volume
Weak Signal
Lucchese Cynthia L
Executive
$1.9M
125,000 shares
Mead Dana G Jr.
Executive
$105.0K
7,000 shares
Leavitt Chase C.
See Remarks
$45.0K
3,000 shares
View MOBI Company Page
POOL CORPPOOL
Unknown·Same day·May 7, 2026 - May 7, 2026
3
Insiders
$2.2M
Volume
Weak Signal
PEREZ DE LA MESA MANUEL J
Executive
$1.9M
10,000 shares
STOKELY JOHN E
Executive
$193.1K
1,000 shares
Hope James D
Executive
$90.2K
464 shares
View POOL Company Page
CSP INC /MA/CSPI
Unknown·3 days·May 12, 2026 - May 15, 2026
3
Insiders
$70.6K
Volume
Weak Signal
Webber Stephen J.
Executive
$23.7K
2,500 shares
Azeri Ismail
Executive
$23.5K
2,500 shares
FOLGER ANTHONY
Executive
$23.4K
2,500 shares
View CSPI Company Page
BOSTON SCIENTIFIC CORPBSX
Unknown·1 day·May 19, 2026 - May 20, 2026
3
Insiders
$554.0K
Volume
Weak Signal
Habiger David C
Executive
$251.1K
4,450 shares
LUDWIG EDWARD J
Executive
$202.9K
3,580 shares
Pegus Cheryl
Executive
$100.0K
1,770 shares
View BSX Company Page