Services-Medical Laboratories
Standard Industrial Classification: SIC 8071
Industry Insider Sentiment Analysis
The Services-Medical Laboratories sector (SIC 8071) acts as a critical barometer for broader economic health. Our real-time monitoring reveals total transactions. Monitoring "cluster buying" is one of the most reliable leading indicators for future sector performance. By analyzing aggregate data across this specific Standard Industrial Classification, investors can filter out individual company volatility and identify high-conviction trends. When multiple directors and officers within the same industry move capital simultaneously, it often signals an upcoming sector-wide revaluation or a fundamental shift in supply chain dynamics that has yet to be recognized by the broader public market.
| Filing Date | Trade Date | Ticker | Company | Reporting Person | Relationship | Type | Price | Qty | Total, $ | Owned After |
|---|---|---|---|---|---|---|---|---|---|---|
| 2013-10-30 23:27 | 2013-10-29 | DGX | QUEST DIAGNOSTICS INC | BONGIORNO THOMAS F | Officer | OPT+S | $59.00 | 6,000 | $354,000 | 14,167 |
| 2013-10-28 16:14 | 2013-10-24 | LH | LABCORP HOLDINGS INC. | KING DAVID P | Director, Officer | OPT+S | $100.91 | 25,000 | $2,522,803 | 63,628 |
| 2013-10-25 23:31 | 2013-10-25 | DGX | QUEST DIAGNOSTICS INC | PFEIFFER GARY M | Director | SELL | $58.10 | 2,000 | $116,200 | 13,927 |
| 2013-10-21 21:59 | 2013-10-17 | LH | LABCORP HOLDINGS INC. | Boyle James T. Jr. | Officer | OPT+S | $102.00 | 24,400 | $2,488,800 | 29,988 |
| 2013-09-27 17:45 | 2013-09-25 | LH | LABCORP HOLDINGS INC. | KING DAVID P | Director, Officer | OPT+S | $99.06 | 25,000 | $2,476,615 | 63,628 |
| 2013-09-25 00:13 | 2013-09-20 | EXAS | EXACT SCIENCES CORP | CRAWFORD SALLY | Director | OPT+S | $12.19 | 25,000 | $304,750 | 203,866 |
| 2013-09-18 23:43 | 2013-09-16 | DGX | QUEST DIAGNOSTICS INC | Doherty Catherine T. | Officer | OPT+S | $62.00 | 43,334 | $2,686,708 | 72,295 |
| 2013-09-12 01:35 | 2013-09-10 | AMS | American Shared Hospital Services | AMERICAN SHARED HOSPITAL SERVICES | Director | BUY | $2.68 | 8,000 | $21,440 | 55,000 |
| 2013-09-06 02:25 | 2013-09-04 | AMS | American Shared Hospital Services | AMERICAN SHARED HOSPITAL SERVICES | Director | BUY | $2.70 | 5,000 | $13,500 | 47,000 |
| 2013-08-28 19:01 | 2013-08-26 | LH | LABCORP HOLDINGS INC. | KING DAVID P | Director, Officer | OPT+S | $96.60 | 25,000 | $2,415,048 | 63,628 |
| 2013-08-24 00:12 | 2013-08-23 | RDNT | RadNet, Inc. | HAMES NORMAN R | Director, Officer | SELL | $2.71 | 361,334 | $979,215 | 595,714 |
| 2013-08-23 17:09 | 2013-08-21 | LH | LABCORP HOLDINGS INC. | MITTELSTAEDT ROBERT E JR | Director | SELL | $96.86 | 7,429 | $719,592 | 7,015 |
| 2013-08-15 23:32 | 2013-08-14 | DGX | QUEST DIAGNOSTICS INC | Doherty Catherine T. | Officer | OPT+S | $59.85 | 33,000 | $1,975,126 | 72,290 |
| 2013-08-12 23:46 | 2013-08-12 | DGX | QUEST DIAGNOSTICS INC | ZIEGLER JOHN B | Director | SELL | $59.45 | 1,953 | $116,109 | 15,876 |
| 2013-08-12 23:45 | 2013-08-08 | DGX | QUEST DIAGNOSTICS INC | BONGIORNO THOMAS F | Officer | OPT+S | $59.33 | 10,864 | $644,585 | 14,086 |
| 2013-07-26 22:56 | 2013-07-24 | LH | LABCORP HOLDINGS INC. | KING DAVID P | Director, Officer | OPT+S | $97.72 | 25,000 | $2,442,898 | 63,628 |
| 2013-07-25 23:40 | 2013-07-23 | DGX | QUEST DIAGNOSTICS INC | BRITELL JENNE K | Director | SELL | $58.99 | 4,200 | $247,767 | 12,227 |
| 2013-06-27 00:38 | 2013-06-24 | LH | LABCORP HOLDINGS INC. | KING DAVID P | Director, Officer | OPT+S | $98.66 | 25,000 | $2,466,533 | 63,423 |
| 2013-06-25 02:19 | 2013-06-20 | AMS | American Shared Hospital Services | AMERICAN SHARED HOSPITAL SERVICES | Director | BUY | $2.25 | 10,000 | $22,488 | 42,000 |
| 2013-06-19 23:35 | 2013-06-17 | DGX | QUEST DIAGNOSTICS INC | PREVOZNIK MICHAEL E | Officer | OPT+S | $62.64 | 126,667 | $7,934,168 | 45,191 |
| 2013-06-11 21:19 | 2013-06-07 | LH | LABCORP HOLDINGS INC. | Boyle James T. Jr. | Officer | OPT+S | $99.63 | 63,100 | $6,286,653 | 29,988 |
| 2013-06-06 20:59 | 2013-05-29 | AMS | American Shared Hospital Services | AMERICAN SHARED HOSPITAL SERVICES | Director | BUY | $1.90 | 5,000 | $9,500 | 32,000 |
| 2013-05-30 23:34 | 2013-05-28 | LH | LABCORP HOLDINGS INC. | Brecher Mark E | Officer | OPT+S | $100.92 | 16,900 | $1,705,548 | 7,753 |
| 2013-05-23 23:05 | 2013-05-21 | LH | LABCORP HOLDINGS INC. | Hayes William B | Officer | OPT+S | $100.00 | 127,200 | $12,720,000 | 23,574 |
| 2013-05-23 23:44 | 2013-05-22 | RDNT | RadNet, Inc. | STOLPER MARK | Officer | SELL | $2.43 | 75,000 | $182,520 | 163,940 |
| 2013-05-24 01:47 | 2013-05-22 | DGX | QUEST DIAGNOSTICS INC | ZIEGLER JOHN B | Director | OPT+S | $62.00 | 31,362 | $1,944,444 | 17,829 |
| 2013-05-22 01:09 | 2013-05-21 | RDNT | RadNet, Inc. | HAMES NORMAN R | Director, Officer | SELL | $2.50 | 38,666 | $96,665 | 957,048 |
| 2013-05-22 00:26 | 2013-05-17 | LH | LABCORP HOLDINGS INC. | EBERTS F SAMUEL III | Officer | OPT+S | $98.47 | 10,000 | $984,700 | 18,593 |
| 2013-05-17 23:51 | 2013-05-16 | AMS | American Shared Hospital Services | AMERICAN SHARED HOSPITAL SERVICES | Director | BUY | $1.85 | 9 | $17 | 249,920 |
| 2013-05-15 22:32 | 2013-05-14 | AMS | American Shared Hospital Services | TROTMAN STANLEY S JR | Director | BUY | $1.75 | 50,200 | $87,745 | 245,487 |
| 2013-05-15 23:39 | 2013-05-14 | DGX | QUEST DIAGNOSTICS INC | BALDWIN JOHN C MD | Director | SELL | $59.41 | 1,214 | $72,122 | 8,634 |
| 2013-05-14 23:37 | 2013-05-10 | LH | LABCORP HOLDINGS INC. | Boyle James T. Jr. | Officer | OPT+S | $93.82 | 68,908 | $6,464,866 | 29,988 |
| 2013-05-10 14:56 | 2013-05-08 | LH | LABCORP HOLDINGS INC. | BELINGARD JEAN-LUC | Director | OPT+S | $92.88 | 2,536 | $235,544 | 26,755 |
| 2013-05-06 19:35 | 2013-05-03 | LH | LABCORP HOLDINGS INC. | WEIKEL M KEITH | Director | OPT+S | $92.91 | 2,046 | $190,086 | 12,365 |
| 2013-05-03 23:33 | 2013-05-02 | DGX | QUEST DIAGNOSTICS INC | WILENSKY GAIL R | Director | OPT+S | $57.20 | 10,000 | $572,008 | 13,952 |
| 2013-04-29 22:49 | 2013-04-25 | LH | LABCORP HOLDINGS INC. | EBERTS F SAMUEL III | Officer | SELL | $93.84 | 1,500 | $140,760 | 18,593 |
| 2013-04-25 20:13 | 2013-04-24 | LH | LABCORP HOLDINGS INC. | Williams R Sanders | Director | OPT+S | $93.77 | 1,850 | $173,477 | 6,312 |
| 2013-04-15 22:37 | 2013-04-11 | LH | LABCORP HOLDINGS INC. | Hayes William B | Officer | OPT+S | $95.00 | 22,234 | $2,112,230 | 23,574 |
| 2013-04-12 23:39 | 2013-04-11 | DGX | QUEST DIAGNOSTICS INC | ZIEGLER JOHN B | Director | OPT+S | $58.35 | 1,470 | $85,775 | 15,854 |
| 2013-04-03 23:58 | 2013-04-01 | LH | LABCORP HOLDINGS INC. | Hayes William B | Officer | SELL | $89.96 | 4,949 | $445,187 | 23,574 |
| 2013-03-19 00:55 | 2013-03-18 | RDNT | RadNet, Inc. | HAMES NORMAN R | Director, Officer | SELL | $2.75 | 3,000 | $8,250 | 995,714 |
| 2013-03-08 00:32 | 2013-03-06 | DGX | QUEST DIAGNOSTICS INC | PREVOZNIK MICHAEL E | Officer | SELL | $56.46 | 1,992 | $112,465 | 45,128 |
| 2013-03-07 00:45 | 2013-03-06 | DGX | QUEST DIAGNOSTICS INC | PREVOZNIK MICHAEL E | Officer | SELL | $56.64 | 778 | $44,063 | 45,128 |
| 2013-02-23 00:33 | 2013-02-20 | DGX | QUEST DIAGNOSTICS INC | ZIEGLER JOHN B | Director | SELL | $57.42 | 2,000 | $114,840 | 15,854 |
| 2013-02-23 00:31 | 2013-02-20 | DGX | QUEST DIAGNOSTICS INC | BRITELL JENNE K | Director | OPT+S | $57.30 | 10,000 | $572,957 | 14,452 |
| 2013-02-20 00:50 | 2013-02-19 | DGX | QUEST DIAGNOSTICS INC | PREVOZNIK MICHAEL E | Officer | SELL | $57.53 | 1,442 | $82,961 | 41,087 |
| 2013-02-13 01:00 | 2013-02-12 | DGX | QUEST DIAGNOSTICS INC | PREVOZNIK MICHAEL E | Officer | SELL | $57.48 | 3,481 | $200,074 | 43,386 |
| 2013-01-19 00:30 | 2013-01-17 | DGX | QUEST DIAGNOSTICS INC | PFEIFFER GARY M | Director | OPT+S | $60.00 | 10,000 | $600,000 | 13,952 |
| 2012-11-30 00:42 | 2012-11-27 | PMD | PSYCHEMEDICS CORP | Dyke James V. | Officer | SELL | $11.59 | 3,000 | $34,762 | 22,500 |
| 2012-11-03 01:26 | 2012-11-02 | EXAS | EXACT SCIENCES CORP | Conroy Kevin T | Director, Officer | BUY | $9.13 | 2,000 | $18,260 | 66,913 |
Sector-Wide Insider Alpha
Analyzing insider movements across the Services-Medical Laboratories sector provides a macro-view of executive conviction. When multiple leaders in different companies within the same SIC code (8071) simultaneously buy shares, it often indicates an industry-wide undervaluation or a positive shift in market cycles.
SEC Filings in Services-Medical Laboratories
Every transaction in the Services-Medical Laboratories industry is reported via Form 4 disclosures. By filtering these filings by industry, investors can detect institutional-scale sentiment shifts before they are reflected in broader market indices, following the capital flow of those with intimate industry knowledge.
UNDERSTANDING THE DATA
FILING DATE: The date and time when the transaction was reported to the SEC. This is when the public first receives the information.
TRADE DATE: The actual day the insider executed the purchase or sale in the market.
INDUSTRY: The specific market sector the company operates in. Useful for identifying broader institutional capital flows across sectors.
OWNED AFTER: The total number of shares held by the insider following the transaction. This highlights the insider's remaining conviction in the company.
CHANGE %: The percentage increase or decrease of the insider's total position. Large percentage changes often carry more weight than the dollar amount alone.
TRADE TYPES DEFINITIONS
BUY: An open market purchase. Typically indicates an insider's belief that the stock is undervalued or poised for growth.
SELL: An open market sale. While often used for diversification or liquidity, large or unexpected sales can be a warning signal.
OPT+S (OPTION EXERCISE & SALE): This occurs when an insider exercises their stock options and sells them immediately. Often part of a structured compensation plan.