Mirae's top 1% of traders turn from sellers to buyers of Samsung Electro-Mechanics in one session

Mirae Asset Securities builds the list from clients ranked in the top 1% by returns over the past month, and publishes it in real time, for the previous day and over five days, through its mobile trading app ^[1][15]. The report does not give the amounts. The ranking shows which stocks the cohort bought or sold most on a net basis, and in what order.

The cohort turns quickly in both directions. Doosan was its top net buy on the morning of Oct. 1 and its second-heaviest sale on Oct. 2 ^[14][13], the mirror image of the Samsung Electro-Mechanics move across the same two sessions ^[2][1]. LG Innotek and CS Wind sat beside Samsung Electro-Mechanics on the Oct. 1 sell list ^[14].

The earnings numbers are firmer evidence. FnGuide's 621.4 billion won consensus is 3.01 times last year's 206.3 billion won, an increase of 415.1 billion won ^[1][2]. Against the 470 billion won brokerages expected about three months ago, the estimate has gained 151.4 billion won, or 32% by exact division (the source rounds it to 30%) ^[3]. Analysts raised it while the won-dollar rate was falling ^[8]. Their case is that demand for the company's MLCCs and FC-BGAs, both parts for AI chips, plus higher unit prices, lifts dollar sales by more than the weaker exchange rate takes off them ^[6][7]. On their account, the currency drag is already netted inside the 621.4 billion won.

The price has not kept pace with the estimate. The stock closed at 1.486 million won on Sept. 22 and has hovered near 1.5 million won since without clearing 1.6 million won, a level 7.7% above that close ^[3][4]. It was slightly lower on the morning the cohort bought ^[3].

One reading is that the cohort is early to a quarter that beats consensus. Another is that this is session noise from a group that reversed Doosan just as fast. A third is that the bet on pricing over currency is right in direction and wrong in size, if the won strengthens faster than unit prices rise. I think the flip adds little to the earnings case. That case rests on a consensus raised by about a third in a quarter, and it stands or falls with the print. The counter-case is that the cohort's top two buys were both AI suppliers, and Hanmi Semiconductor rose more than 2% for a fourth straight session ^[1][9], so the buying fits a theme.

The cohort's allocation on the day is clearer than its motive. It sold Samsung Electronics hardest ^[13] and bought down the AI supply chain. Hanmi expects to sell more than 200 MSVP machines this year and about 350 next year ^[10]. Samsung SDS, the third pick, fell more than 2% in the morning ^[11]. Of its data center build-out, Daol Investment & Securities analyst Kim Hye-young wrote: "AI data center revenue is gradually coming through starting this year, and we expect a steady expansion in sales based on a stable order volume and investment structure." ^[12]

If Mirae's five-day tally shows the cohort back to net selling Samsung Electro-Mechanics within the week, the Oct. 2 buying was a session trade with no bearing on the won ^[15].