During Monday's morning session, 34 companies made new 52-week highs.

Noteables:

• Sony SNE was the largest firm by market cap to set a new 52-week high.
• Acme United Corporation. Common Stock ACU was the smallest firm in terms of market cap to set a new 52-week high.
• Performance Shipping PSHG was the biggest gainer, trading up 947.32% to reach its 52-week high.

Here is a list of stocks that set new 52-week highs during the first half-hour of trading on Monday:

• Sony SNE shares were up 2.34% on Monday to hit a new 52-week high of $85.82 for a change of up 2.34%.
• Estee Lauder Cos EL shares set a new 52-week high of $237.82 on Monday, moving up 2.86%.
• Southern Copper SCCO stock hit a yearly high price of $53.55. The stock was up 1.46% for the day.
• NIO NIO shares were up 9.72% for the day, having made a 52-week high of $34.94.
• Trane Technologies TT shares were up 3.23% on Monday to hit a new 52-week high of $137.38 for a change of up 3.23%.
• Garmin GRMN stock set a new 52-week high of $108.74 Monday morning. Over the session, the stock traded up 4.35%.
• Bio-Rad Laboratories BIO stock on Monday broke to a yearly high of $609.45. Shares traded up 2.98%.
• Monolithic Power Systems MPWR stock hit a yearly high price of $326.70. The stock was up 1.21% for the day.
• Sociedad Quimica Y Minera SQM shares hit a new 52-week high of $38.50. The stock traded up 3.51% on the session.
• Quanta Services PWR shares broke to $64.32 on Monday, setting a new 52-week high with a change of up 2.23%.
• Dunkin Brands Group DNKN stock on Monday broke to a yearly high of $106.13. Shares traded up 6.32%.
• Amedisys AMED shares broke to a new 52-week high of $264.77 on Monday. Shares of the company traded up 1.86%.
• IAA IAA stock made a new 52-week high of $60.52 Monday. The stock was up 4.98% for the day.
• Dolby Laboratories DLB shares were up 2.46% for the day, having made a 52-week high of $77.07.
• United Therapeutics UTHR stock hit a yearly high price of $135.00. The stock was down 0.43% for the day.
• Timken TKR stock hit a yearly high price of $62.26. The stock was up 3.57% for the day.
• Goosehead Insurance GSHD shares hit a yearly high of $125.42. The stock traded up 1.15% on the session.
• Regal Beloit RBC shares set a new 52-week high of $103.70 on Monday, moving up 3.42%.
• Saia SAIA shares broke to a new 52-week high of $152.26 on Monday. Shares of the company traded up 1.18%.
• Immunovant IMVT shares were up 2.93% for the day, having made a 52-week high of $45.30.
• R1 RCM RCM shares set a new 52-week high of $18.67 on Monday, moving up 3.96%.
• Live Oak Bancshares LOB shares were up 2.6% for the day, having made a 52-week high of $38.37.
• Providence Service PRSC shares hit a new 52-week high of $121.58. The stock traded up 1.88% on the session.
• Endurance Intl Gr Hldgs EIGI stock made a new 52-week high of $9.48 Monday. The stock was up 62.13% for the day.
• California Resources CRC stock hit a yearly high price of $13.76. The stock was up 1.58% for the day.
• Cowen COWN stock set a new 52-week high of $22.03 Monday morning. Over the session, the stock traded up 2.05%.
• Daseke DSKE shares hit $7.36 on Monday morning, setting a new 52-week high for a change of up 6.24%.
• InterPrivate Acquisition IPV shares set a new yearly high of $10.25 this morning. The stock was up 1.92% on the session.
• Performance Shipping PSHG shares achieved a new 52-week high on Monday morning, hitting $4.73 with a daily change of up 947.32%.
• O2Micro Intl OIIM stock hit a yearly high price of $6.95. The stock was up 2.8% for the day.
• Medley Management MDLY shares broke to a new 52-week high of $5.44 on Monday. Shares of the company traded up 876.98%.
• San Juan Basin Royalty SJT shares broke to $3.33 on Monday, setting a new 52-week high with a change of up 0.31%.
• Strattec Security STRT stock set a new 52-week high of $30.40 Monday morning. Over the session, the stock traded up 4.68%.
• Acme United Corporation. Common Stock ACU stock made a new 52-week high of $28.64 Monday. The stock was up 1.46% for the day.

Stay with Benzinga for further updates about these companies and many others going forward.