Returning to his senior year of high school, he went all in and made billions by buying at the botto

On the day Douyin was launched, it even rained lightly in Jiangcheng County.

10:00 AM.

Zhang Nan called, her voice a little hoarse.

"Mr. Chen, you're online."

Chen Mo was sitting in his study reviewing the mistakes he had made after the provincial mock exam when he heard this, so he put down his pen.

"How's the data?"

There was a two-second silence on the other end of the phone.

Then came Zhang Nan's voice, barely containing his excitement.

"Much better than expected."

"After the first batch of campus invitation codes were issued, they spread very quickly. Several universities and high schools in the provincial capital, Jiangcheng, and Changhu have already started to upload videos on their own."

"Especially that three-second costume change and dormitory dance template, it spread very quickly."

She paused, then added.

"The server pressure is greater than we anticipated."

Chen Mo smiled.

"High pressure is a good thing."

"It's not all good news." Zhang Nan rubbed his temples. "The tech team is already yelling. The recommendation system isn't running smoothly yet, and a lot of content distribution isn't accurate enough, but user dwell time has already exceeded expectations."

What's the average?

"The first batch of core users spent more than forty minutes a day using the app."

Chen Mo tapped his fingertip lightly on the table.

This number is already quite good; the addictive power of short videos is beginning to emerge.

"Continue to expand capacity; the campus challenge competition will start ahead of schedule."

"Don't rush to burn through national data traffic; first, penetrate cities with a high concentration of young people."

"clear."

The sound of keyboards clicking came from Zhang Nan's side, and someone shouted, "It crashed again."

She muttered a curse under her breath, then said to Chen Mo, "Mr. Chen, I'll go deal with the server first."

The phone hangs up.

Chen Mo looked at his phone screen, a slight smile appearing in his eyes.

According to Zhang Nan, the two sisters have almost reached 500,000 followers, making them veritable top influencers on Douyin.

If it weren't for the fear of disturbing their studies, Chen Mo would have been prepared to have them as spokespeople.

In the afternoon, Chen Mo went to see Bian Xuezhang.

When I opened the door, the main lights were off inside; only a few monitors were casting a dim glow.

Bian Xuezhang sat in front of the computer, his eyes shining brightly.

Hearing footsteps, he turned around abruptly.

"Mr. Chen, you've come at the perfect time."

Chen Mo glanced around the room.

"How long has it been since you went out?"

Bian Xuezhang was stunned for a moment.

"Uh... two days?"

An assistant who was taking care of him whispered, "Four days."

Bian Xuezhang coughed, pretending not to hear.

"The model has made progress."

He pushed the chair aside, and a set of backtesting curves immediately popped up on the screen.

A-share multi-factor stock selection, stock index futures hedging, and short-cycle momentum.

Several lines were intertwined, looking somewhat messy, but Chen Mo quickly discerned the core of the problem.

Bian Xuezhang no longer relied solely on historical price fluctuations, but instead began to break down and model capital flows, volatility, trading structure, and market sentiment.

Although it's still rough, the skeleton is already visible.

Chen Mo stared at the screen for several minutes.

What about the Sharp ratio?

"After deducting slippage and transaction costs, the backtesting range is close to 3."

After Bian Xuezhang finished speaking, he quickly added another sentence.

"Of course, the actual performance will definitely be less than what's expected."

Chen Mo nodded.

"Maximum drawdown?"

"Within twelve points."

"capacity?"

"Currently, the strategy capacity is not large. It's comfortable within one billion, but we would need to split the strategy pool if it's two or three billion."

Bian Xuezhang looked a little regretful as he said this.

"Currently, computing power is insufficient, and data quality is poor. Many high-frequency tasks cannot be performed."

Chen Mo nodded, indicating his understanding of what Bian Xuezhang had said.

"good."

Bian Xuezhang was stunned.

Chen Mo rarely compliments people so directly; he pointed to the screen.

"This system is no longer an ordinary stock trading model. With continued refinement, it could become one of the earliest truly systematic quantitative platforms in China."

Bian Xuezhang's lips moved slightly.

He almost completely shut himself off during this period.

I write code during the day and run data at night.

The first thing I do when I wake up isn't brushing my teeth, but checking if the test results are off.

Hearing those words now, the tension in my heart suddenly eased a little.

He rubbed his eyes.

"So what's the next step?"

Chen Mo picked up his coat.

"Pack your things, come with me to Suzhou and Hangzhou."

"what?"

"Bring the model."

Bian Xuezhang looked completely bewildered.

"Where are you going and what are you doing?"

Chen Mo smiled.

"Looking for someone."

……

Two days later.

Suzhou and Hangzhou.

There were fewer than twenty people sitting in a private room on the second floor of a lakeside teahouse.

Officially, this was a small-scale quantitative industry seminar.

The organizers, however, are quite interesting.

Pengcheng Jiuding and Zexi Investment.

With those two names displayed, no one dared to underestimate them.

These days, quantitative analysis is still a long way off in China.

When most people talk about stocks, they still talk about news, themes, market manipulators, and market sentiment.

There aren't many people who are truly willing to sit down and study data, models, computing power, and strategy capacity.

But it wasn't like that; two young people were sitting by the window in the private room.

He was thin, wore glasses, and didn't talk much.

One was a bit more outgoing, always holding a pen and scribbling on the edges of the meeting materials.

Liang Wenfeng and Xu Jin.

Magic Square Technology is a relatively new company and not yet well-known.

Before they arrived, the two of them didn't have high expectations.

They had attended several of these kinds of seminars.

Many people talk about quantitative analysis, but in the end, they're still discussing how to use programs to place orders faster, or how to package technical indicators into models.

Until Bian Xuezhang stood up.

The projector is on.

The first image shows the data structure.

Market data, financial factors, trading microstructure, sentiment variables, risk exposure, and position constraints.

Bian Xuezhang was a little nervous at first.

As he spoke about the third page, his pace gradually quickened.

"If you only look at the rate of return, the model is prone to overfitting."

"So I pay more attention to a few things."

"Strategy decay under different market conditions."

"Changes in returns after factor crowding".

"When a pullback occurs, is it due to market beta exposure or distortion of signals within the model?"

He then clicked on another image.

A backtest curve appears.

Someone in the room took a quiet breath.

That line is too stable.

Soon someone asked a question.

How is slippage calculated?

"The impact of the transaction was estimated using conservative parameters based on the actual transaction volume."

What should be done with suspended stocks?

"Directly remove non-tradable samples to prevent survivor bias."

"What about the capacity?"

"Currently, the strategy capacity is limited, so a single strategy cannot be used to amplify the effect. Multiple strategies must be combined."

Liang Wenfeng's expression grew increasingly tense, and Xu Jin whispered, "His line of thinking is somewhat similar to ours."

Liang Wenfeng didn't speak, but his eyes remained fixed on the screen.

The seminar was originally scheduled for two hours.

It eventually dragged on for four hours.

When the event ended, many people still surrounded Bian Xuezhang, asking him questions about the parameters and data sources. Bian Xuezhang was sweating profusely from all the questions, and his glasses slipped down to his nose.

Chen Mo sat in the corner, watching this scene, without rushing to speak.

After most of the people had left, Liang Wenfeng and Xu Jin finally came over.

Liang Wenfeng first looked at Bian Xuezhang.

"Mr. Bian, could you elaborate on your risk exposure breakdown earlier?"

Bian Xuezhang pushed up his glasses.

"Can."

Xu Jin looked at Chen Mo.

"Mr. Chen, would it be convenient for us to talk privately?"

Chen Mo put down his teacup; the fish had finally taken the bait.