What is his typical holding period? Is it minutes, hours, or does he hold positions overnight?

Sure, here is the English translation:

Okay, let's discuss the position holding style of the Japanese stock god B.N.F. (Takashi Koteokawa). This is a topic many traders are curious about.

Simply put, his trading core is short-term, but highly flexible, not confined to a single, fixed holding period.

We can divide his primary holding cycles into the following scenarios:

1. Main Strategy: Day Trading & Short-Term Swing Trading (Hours ~ Days)

This is his most famous approach and the one that generated most of his wealth.

Core Tactic: "Counter-Trend Rebound Buying". You can understand it like this: He uses specialized software to monitor the entire stock market. Once he identifies stocks that have become oversold due to panic or bad news within just a few days (e.g., down 20%-30%), he judges this as an "overdone" selling opportunity.
Holding Time: In this type of trade, he might sell for a profit within hours of buying if the price rebounds quickly. More often, however, depending on the strength of the rebound and the overall market conditions, he will hold for one or two days, or even around a week, to capture a larger rebound swing.
Overnight Positions? He does hold positions overnight, and this is the norm. His style isn't "minute-by-minute" scalping, nor is it strictly day trading that requires closing all positions before the market close. He's more like an extremely responsive short-term swing trader.

For example: Like a rubber band stretched overly tight by market sentiment, he steps in when the band is tautest, betting it will inevitably snap back. How high and how long the snap-back lasts determines whether he lets go immediately or waits a bit longer.

2. Medium-Term Investing (Weeks ~ Months)

Besides the short-term blitz above, when he identifies a relatively clear trend in certain stocks or the overall market, he also engages in "trend-following" trades with longer holding periods.

In this case, he might hold positions for several weeks or even months, but this isn't his primary mode of trading. This usually happens when he perceives a larger, sustained market trend.

3. Long-Term Holdings (Asset Allocation)

This aspect is often overlooked. After B.N.F. accumulated astonishing wealth, it became impossible for him to dedicate all his capital to short-term trading.

He allocated a significant portion of his assets to long-term holdings in blue-chip stocks and real estate (for instance, he once bought an entire building in Akihabara).
These aren't "trades" anymore, but rather "investments" and "asset allocation," aimed at preserving and growing his vast wealth. While not directly related to the "holding period" we're discussing regarding trading, it helps complete the picture.

In Summary

So, to answer your questions:

What's his typical holding period?
- The main strategy involves short-term swings lasting days to about a week.
Is it minutes, hours, or does he hold overnight?
- Not minutes (ultra-short term).
- Could be hours, but more often to wait for a larger rebound.
- Yes, he does and frequently holds positions overnight.

His core strength lies in his exceptional grasp of market sentiment and short-term price deviation (volatility), combined with great flexibility. He holds no rigid rules – if the market presents an opportunity for hours, he trades for hours; if it offers a chance over days, he holds for days.