Insider Buy/Sell Ratio for September 2026
Ratio0.2:1
Daily Buy & Sell Volume
By Sector
Technology
Buys184
Sells3239
Buy $$95.06M
Sell $$5.39B
Ratio1:56.75
% Change vs. Prior
Ratio +10.2%Value +24.5%
Energy
Buys85
Sells140
Buy $$48.22M
Sell $$4.05B
Ratio1:83.99
% Change vs. Prior
Ratio -78.4%Value +208.6%
Healthcare
Buys268
Sells1579
Buy $$216.58M
Sell $$1.66B
Ratio1:7.65
% Change vs. Prior
Ratio +235.7%Value -43.7%
Financial Services
Buys371
Sells769
Buy $$280.86M
Sell $$1.05B
Ratio1:3.75
% Change vs. Prior
Ratio +360.6%Value -42.6%
Industrials
Buys198
Sells540
Buy $$626.50M
Sell $$403.84M
Ratio1.55:1
% Change vs. Prior
Ratio +177.7%Value -56.4%
Consumer Cyclical
Buys217
Sells514
Buy $$663.14M
Sell $$281.67M
Ratio2.35:1
% Change vs. Prior
Ratio +19596.4%Value -80.9%
Communication Services
Buys60
Sells297
Buy $$91.87M
Sell $$240.78M
Ratio1:2.62
% Change vs. Prior
Ratio +399.7%Value -43.2%
Real Estate
Buys83
Sells67
Buy $$15.48M
Sell $$164.76M
Ratio1:10.64
% Change vs. Prior
Ratio -77.0%Value +48.3%
Consumer Defensive
Buys63
Sells153
Buy $$15.81M
Sell $$118.59M
Ratio1:7.50
% Change vs. Prior
Ratio +739.0%Value -89.2%
Basic Materials
Buys64
Sells59
Buy $$13.71M
Sell $$51.39M
Ratio1:3.75
% Change vs. Prior
Ratio +121.1%Value -76.3%
Utilities
Buys58
Sells37
Buy $$15.11M
Sell $$19.81M
Ratio1:1.31
% Change vs. Prior
Ratio -10.5%Value -18.5%
By Industry
Oil & Gas Exploration & Production
Buys48
Sells27
Buy $$4.03M
Sell $$3.78B
Ratio1:937.31
Computer Hardware
Buys2
Sells1172
Buy $$9.90K
Sell $$1.46B
Ratio1:147087.65
% Change vs. Prior
Ratio +inf%Value +93.4%
Semiconductors
Buys35
Sells306
Buy $$468.61K
Sell $$1.37B
Ratio1:2926.79
% Change vs. Prior
Ratio -98.2%Value +127.9%
Software - Application
Buys85
Sells615
Buy $$80.39M
Sell $$858.72M
Ratio1:10.68
% Change vs. Prior
Ratio +71.5%Value +36.7%
Software - Infrastructure
Buys29
Sells832
Buy $$4.58M
Sell $$866.25M
Ratio1:189.07
% Change vs. Prior
Ratio -43.3%Value -38.3%
Biotechnology
Buys205
Sells984
Buy $$196.44M
Sell $$644.65M
Ratio1:3.28
% Change vs. Prior
Ratio +177.8%Value -17.4%
Information Technology Services
Buys27
Sells56
Buy $$9.20M
Sell $$612.45M
Ratio1:66.60
Waste Management
Buys29
Sells2
Buy $$572.71M
Sell $$404.95K
Ratio1414.26:1
% Change vs. Prior
Ratio +503.6%Value -30.1%
Banks - Regional
Buys117
Sells270
Buy $$39.45M
Sell $$396.11M
Ratio1:10.04
% Change vs. Prior
Ratio +104.0%Value -58.5%
Medical - Care Facilities
Buys1
Sells19
Buy $$416.33
Sell $$427.12M
Ratio1:1025910.46
% Change vs. Prior
Ratio -99.8%Value -45.2%
Residential Construction
Buys32
Sells2
Buy $$402.80M
Sell $$366.24K
Ratio1099.83:1
Medical - Diagnostics & Research
Buys2
Sells202
Buy $$7.82K
Sell $$341.98M
Ratio1:43736.12
% Change vs. Prior
Ratio -99.5%Value -50.8%
Asset Management
Buys141
Sells87
Buy $$194.63M
Sell $$86.76M
Ratio2.24:1
% Change vs. Prior
Ratio +8813.1%Value -54.6%
Specialty Retail
Buys36
Sells268
Buy $$65.53M
Sell $$166.54M
Ratio1:2.54
% Change vs. Prior
Ratio +1292.9%Value -80.2%
Auto - Dealerships
Buys113
Sells11
Buy $$188.32M
Sell $$10.18M
Ratio18.51:1
Transactions (9312)
LENNAR CORP /NEW/ (LEN, LEN.B)
BERKSHIRE HATHAWAY INC โ 10% Owner
Shares
100
Price
$80.00
Total Value
$8.00K
Shares Held After
548,992
% of Holdings
0.0%
LENNAR CORP /NEW/ (LEN, LEN.B)
BERKSHIRE HATHAWAY INC โ 10% Owner
Shares
12,289
Price
$81.95
Total Value
$1.01M
Shares Held After
25,395,623
% of Holdings
0.0%
Lumentum Holdings Inc. (LITE)
Wupen Yuen โ PRESIDENT, GLOBAL BUS. UNITS
Shares
307
Price
$945.00
Total Value
$290.12K
Shares Held After
108,320
% of Holdings
0.3%
Cerebras Systems Inc. (CBRS)
Mallick Dhiraj โ Chief Operating Officer
Shares
68,830
Price
$194.91
Total Value
$13.42M
Shares Held After
0
% of Holdings
100.0%
Cerebras Systems Inc. (CBRS)
Mallick Dhiraj โ Chief Operating Officer
Shares
18,703
Price
$195.56
Total Value
$3.66M
Shares Held After
68,830
% of Holdings
21.4%
Cerebras Systems Inc. (CBRS)
Mallick Dhiraj โ Chief Operating Officer
Shares
6,613
Price
$197.05
Total Value
$1.30M
Shares Held After
87,533
% of Holdings
7.0%
Cerebras Systems Inc. (CBRS)
Mallick Dhiraj โ Chief Operating Officer
Shares
5,170
Price
$197.85
Total Value
$1.02M
Shares Held After
94,146
% of Holdings
5.2%
Cerebras Systems Inc. (CBRS)
Mallick Dhiraj โ Chief Operating Officer
Shares
17,000
Price
$198.96
Total Value
$3.38M
Shares Held After
99,316
% of Holdings
14.6%
Cerebras Systems Inc. (CBRS)
Mallick Dhiraj โ Chief Operating Officer
Shares
17,848
Price
$199.89
Total Value
$3.57M
Shares Held After
116,316
% of Holdings
13.3%
Cerebras Systems Inc. (CBRS)
Mallick Dhiraj โ Chief Operating Officer
Shares
22,915
Price
$200.96
Total Value
$4.60M
Shares Held After
134,164
% of Holdings
14.6%
Cerebras Systems Inc. (CBRS)
Mallick Dhiraj โ Chief Operating Officer
Shares
5,637
Price
$201.91
Total Value
$1.14M
Shares Held After
157,079
% of Holdings
3.5%
Cerebras Systems Inc. (CBRS)
Mallick Dhiraj โ Chief Operating Officer
Shares
9,682
Price
$203.37
Total Value
$1.97M
Shares Held After
162,716
% of Holdings
5.6%
Cerebras Systems Inc. (CBRS)
Mallick Dhiraj โ Chief Operating Officer
Shares
27,492
Price
$204.17
Total Value
$5.61M
Shares Held After
172,398
% of Holdings
13.8%
Cerebras Systems Inc. (CBRS)
Mallick Dhiraj โ Chief Operating Officer
Shares
8,729
Price
$205.17
Total Value
$1.79M
Shares Held After
199,890
% of Holdings
4.2%
Cerebras Systems Inc. (CBRS)
Mallick Dhiraj โ Chief Operating Officer
Shares
9,047
Price
$206.13
Total Value
$1.86M
Shares Held After
208,619
% of Holdings
4.2%
Cerebras Systems Inc. (CBRS)
Mallick Dhiraj โ Chief Operating Officer
Shares
9,652
Price
$207.06
Total Value
$2.00M
Shares Held After
217,666
% of Holdings
4.2%
Cerebras Systems Inc. (CBRS)
Mallick Dhiraj โ Chief Operating Officer
Shares
20,714
Price
$208.38
Total Value
$4.32M
Shares Held After
227,318
% of Holdings
8.4%
Cerebras Systems Inc. (CBRS)
Mallick Dhiraj โ Chief Operating Officer
Shares
41,278
Price
$209.33
Total Value
$8.64M
Shares Held After
248,032
% of Holdings
14.3%
Cerebras Systems Inc. (CBRS)
Mallick Dhiraj โ Chief Operating Officer
Shares
46,427
Price
$210.27
Total Value
$9.76M
Shares Held After
289,310
% of Holdings
13.8%
Cerebras Systems Inc. (CBRS)
Mallick Dhiraj โ Chief Operating Officer
Shares
41,391
Price
$211.29
Total Value
$8.75M
Shares Held After
335,737
% of Holdings
11.0%
Cerebras Systems Inc. (CBRS)
Mallick Dhiraj โ Chief Operating Officer
Shares
18,274
Price
$212.20
Total Value
$3.88M
Shares Held After
377,128
% of Holdings
4.6%
Cerebras Systems Inc. (CBRS)
Mallick Dhiraj โ Chief Operating Officer
Shares
598
Price
$212.93
Total Value
$127.33K
Shares Held After
395,402
% of Holdings
0.2%
Cerebras Systems Inc. (CBRS)
Komin Robert Patrick Jr. โ Chief Financial Officer
Shares
3,000
Price
$194.92
Total Value
$584.76K
Shares Held After
0
% of Holdings
100.0%
Cerebras Systems Inc. (CBRS)
Komin Robert Patrick Jr. โ Chief Financial Officer
Shares
1,115
Price
$195.61
Total Value
$218.11K
Shares Held After
3,000
% of Holdings
27.1%
Cerebras Systems Inc. (CBRS)
Komin Robert Patrick Jr. โ Chief Financial Officer
Shares
685
Price
$197.48
Total Value
$135.27K
Shares Held After
4,115
% of Holdings
14.3%
Cerebras Systems Inc. (CBRS)
Komin Robert Patrick Jr. โ Chief Financial Officer
Shares
870
Price
$198.70
Total Value
$172.87K
Shares Held After
4,800
% of Holdings
15.3%
Cerebras Systems Inc. (CBRS)
Komin Robert Patrick Jr. โ Chief Financial Officer
Shares
1,130
Price
$199.80
Total Value
$225.77K
Shares Held After
5,670
% of Holdings
16.6%
Cerebras Systems Inc. (CBRS)
Komin Robert Patrick Jr. โ Chief Financial Officer
Shares
11,200
Price
$201.22
Total Value
$2.25M
Shares Held After
6,800
% of Holdings
62.2%
Cerebras Systems Inc. (CBRS)
Komin Robert Patrick Jr. โ Chief Financial Officer
Shares
400
Price
$201.96
Total Value
$80.78K
Shares Held After
18,000
% of Holdings
2.2%
Cerebras Systems Inc. (CBRS)
Komin Robert Patrick Jr. โ Chief Financial Officer
Shares
800
Price
$203.48
Total Value
$162.78K
Shares Held After
18,400
% of Holdings
4.2%
Cerebras Systems Inc. (CBRS)
Komin Robert Patrick Jr. โ Chief Financial Officer
Shares
1,600
Price
$204.26
Total Value
$326.82K
Shares Held After
19,200
% of Holdings
7.7%
Cerebras Systems Inc. (CBRS)
Komin Robert Patrick Jr. โ Chief Financial Officer
Shares
600
Price
$205.47
Total Value
$123.28K
Shares Held After
20,800
% of Holdings
2.8%
Cerebras Systems Inc. (CBRS)
Komin Robert Patrick Jr. โ Chief Financial Officer
Shares
800
Price
$206.68
Total Value
$165.34K
Shares Held After
21,400
% of Holdings
3.6%
Cerebras Systems Inc. (CBRS)
Komin Robert Patrick Jr. โ Chief Financial Officer
Shares
700
Price
$207.83
Total Value
$145.48K
Shares Held After
22,200
% of Holdings
3.1%
Cerebras Systems Inc. (CBRS)
Komin Robert Patrick Jr. โ Chief Financial Officer
Shares
2,197
Price
$208.98
Total Value
$459.13K
Shares Held After
22,900
% of Holdings
8.8%
Cerebras Systems Inc. (CBRS)
Komin Robert Patrick Jr. โ Chief Financial Officer
Shares
2,802
Price
$210.02
Total Value
$588.48K
Shares Held After
25,097
% of Holdings
10.0%
Cerebras Systems Inc. (CBRS)
Komin Robert Patrick Jr. โ Chief Financial Officer
Shares
2,771
Price
$211.03
Total Value
$584.76K
Shares Held After
27,899
% of Holdings
9.0%
Cerebras Systems Inc. (CBRS)
Komin Robert Patrick Jr. โ Chief Financial Officer
Shares
1,830
Price
$211.79
Total Value
$387.58K
Shares Held After
30,670
% of Holdings
5.6%
BioCardia, Inc. (BCDA)
Altman Peter โ Director
Shares
1,000
Price
$1.03
Total Value
$1.03K
Shares Held After
384,885
% of Holdings
0.3%
COSTCO WHOLESALE CORP /NEW (COST)
Adamo Claudine โ Executive Vice President
Shares
2,200
Price
$915.93
Total Value
$2.02M
Shares Held After
7,134
% of Holdings
23.6%
COSTCO WHOLESALE CORP /NEW (COST)
Frates Caton โ Sr. Executive Vice President
Shares
801
Price
$915.93
Total Value
$733.33K
Shares Held After
7,912
% of Holdings
9.2%
PROTHENA CORP PUBLIC LTD CO (PRTA)
SCULLY WILLIAM P โ 10% Owner
Shares
162,000
Price
$8.68
Total Value
$1.41M
Shares Held After
214,000
% of Holdings
75.7%
HERSHEY CO (HSY)
Shares
635
Price
$163.29
Total Value
$103.69K
Shares Held After
696,119
% of Holdings
0.1%
HERSHEY CO (HSY)
Shares
1,220
Price
$162.64
Total Value
$198.42K
Shares Held After
696,754
% of Holdings
0.2%
HERSHEY CO (HSY)
Shares
7,306
Price
$161.39
Total Value
$1.18M
Shares Held After
697,974
% of Holdings
1.0%
HERSHEY CO (HSY)
Shares
839
Price
$160.85
Total Value
$134.95K
Shares Held After
705,280
% of Holdings
0.1%
Fastly, Inc. (FSLY)
Bergman Artur โ Director
Shares
3,961
Price
$25.26
Total Value
$100.05K
Shares Held After
1,101,319
% of Holdings
0.4%
UNITED THERAPEUTICS Corp (UTHR)
ROTHBLATT MARTINE A โ Director
Shares
200
Price
$486.77
Total Value
$97.35K
Shares Held After
324,443
% of Holdings
0.1%
UNITED THERAPEUTICS Corp (UTHR)
ROTHBLATT MARTINE A โ Director
Shares
120
Price
$482.28
Total Value
$57.87K
Shares Held After
324,643
% of Holdings
0.0%
UNITED THERAPEUTICS Corp (UTHR)
ROTHBLATT MARTINE A โ Director
Shares
500
Price
$481.22
Total Value
$240.61K
Shares Held After
324,763
% of Holdings
0.2%
9312 transactions