Friday, August 1, 2025

In Tech/AI We Trust

I haven’t actively traded since I retired four years ago. That changed on Liberation Day, when I was drawn back into the market, in hope of taking advantage of an expected crash. My short position, however, didn’t deliver much—Trump backed down too quickly on April 9 and I failed to realize the gain. 

For most of May and June, I stayed on the sidelines while others were busy trading TACO. My thumb-sucking stopped when Trump managed to bomb Iran’s nuclear site and simultaneously avert a war. I was genuinely impressed by his ability to thread the needle. No U.S. president since Jimmy Carter had pulled off something like that.  

I came to believe that Trump administration, working with tech entrepreneurs, could spark a major tech/AI-led boom in the U.S. market. So I started loading up on TQQQ in July. My current non-RE portfolio looks roughly like this:

  • 90%: TQQQ/UPRO
  • 10%: SHV/BND

It’s a sharp departure from my original retirement plan. If the Internet and mobile revolutions were 100-foot waves, the incoming AI revolution could be a 1,000-foot tsunami. The future arrived in Silicon Valley a couple of years ago—it just hasn’t fully spread to the rest of the economy yet.

Like the Internet and mobile boom, AI’s short-term promise may be overhyped, but its long-term impact is likely underestimated. For investors with a 10–20 year horizon and beyond, tech/AI seems a sure bet.

Of course, no one knows exactly who will capture the profits from this revolution. Back in the 1990s, people saw the Internet’s potential and went all-in on false promises like AOL, Yahoo, Cisco, Xerox, IBM, and Kodak, or even outright frauds like Enron, WorldCom, and Global Crossing. Many of those names didn’t survive. The true winners—the so-called MAG 7—were still beyond the horizon at the time.

I don’t know how many of today’s MAG 7 and hot tech/AI startups will still dominate 10–20 years from now. The greatest risk, however, is not taking the risk. Even though I can’t predict who will be the winners, it's likely they’ll become major components of QQQ—that's essentially my bet for the next decade. 

All I can do now is to sit back and watch how reality unfolds.

Thursday, March 20, 2025

Brace for Impact

Trump is set to announce his reciprocal tariff on April 2, a move that will reshape the global trade and mark a paradigm shift in the U.S. foreign and economic policy. 

The transition could be turbulent—potentially triggering a market crash, a brief economic downturn or recession, rapid Fed rate cuts, and eventually, a recovery. It’s starting to feel eerily reminiscent of late January 2020, similar to the unsettling period just before the first confirmed COVID case hit the U.S.

My portfolio before:

40% UPRO/TQQQ
40% SHV
20% Real Estate (Primary home + 2 rentals)

To brace for impact: 

10% UPRO
5% YANG
5% TMF 
60% SHV/BND
20% Real Estate

Let’s see if reality unfolds as expected.

=========== Update on April 2 ===============
Last warning before the storm...


=========== Update on April 3 ===============

The market did crash today. Now, let's see if it continues to play out as expected:

It’s been clear for some time that the US equity market was propped up by unsustainable deficit spending and the manipulation of treasury duration. The interest payment in the US has exceeded the defense spending - a dangerous sign. The status quo cannot continue forever, something has to break.

=========== Update on April 4 ===============

China retaliated with a 34% reciprocal tariff. The ball is back in Trump’s court. Meanwhile, Xi has his own internal political dynamics to manage. Neither can afford showing weakness anytime soon. The trade war is likely to escalate before de-escalating. How this game of chicken will end is beyond anyone’s control.

The market continues to collapse today. These developments seem to align with the Trump administration’s objectives:

  • The 10-year Treasury yield has dropped below 4%, which is beneficial for refinancing over $9T in Treasuries.
  • Oil, gold, and most commodities are coming down, which helps lower inflation.
  • The dollar is depreciating, which should, in theory, boost U.S. exports.

The next question is when the Fed will intervene. My guess is it won’t cut preemptively unless:

  1. The market downturn triggers widespread margin calls, risking a financial crisis.

  2. Clear evidence of economic pains emerges, though that may take months to develop.

YANG and TMF appreciate ~25% and 5%, respectively, but my bet is too small to change anything. 

Hope to capture some of the upside in the future.

=========== Update on April 5 ===============

Weekend readings for the paradigm shift:

1. Scott Bessent on Trump's tariff policy:

2. Joseph Wang on the Fed, interest rate, and macro (https://fedguy.com/)


3. Matthew Klein and Michael Pettis on trade wars:



=========== Update on April 6 ===============

Nikkei futures suspended after hitting circuit breaker.

Russell 2000 circuit breaker hit in the overnight session.

CME group futures markets are putting out circuit breaker warnings for tomorrow.

Trump is pressuring the Fed to cut interest rates:

It’s shaping up to be a high-stakes, three-way game of chicken between Trump, Xi, and the Fed. With neither Trump nor Xi showing any signs of backing down in their standoff, the pressure is mounting on the Fed to make the first move.

However, Jerome Powell can’t simply cut rates like during the GFC or the COVID crisis—he’ll need a credible justification. Until that cover materializes, global markets are likely to remain on edge, and next week could bring extreme volatility as investors try to read Trump's Xi's, and the Fed’s next move in this economic standoff.

=========== Update on April 7 ===============

Trump doubled down as expected:

YANG surged as anticipated, while TMF unexpectedly reversed its gains. I closed both positions today, the YANG bet returned about 55% in a few days but TMF was only break-even. My main decision is to close large position on UPRO/TQQQ before the tariff announcement, which saved me from big losses.

There's speculation China has sold $50B in U.S. Treasuries—potentially a signal of its intent to escalate financial tensions. If China decides to weaponize its Treasury holdings, the traditional correlation between the stock market and Treasuries may begin to break down. In light of this, I exited my position in TMF. So, this is about a break-even bet.

=========== Update on April 8 ===============

The Trump administration attempts o calm the market by signaling progress on trade negotiations. The stock market opens up with a ~3% rebound right now. 

Financial markets usually move ahead of real economic shifts. With reciprocal tariffs set to take effect tomorrow, their impact will gradually ripple through the global value chain. People and businesses start to change their behaviors in response to the incentives, but it may take time for the world to adjust accordingly. I expect more negative news bubbled up from real economic before it's safe to be fully invested.

Updated: The rebound was short-lived, and the market ultimately closed lower. The new tariff will take effect at midnight tonight. As the pain spreads through the economy, its impact will be reflected in corporate balance sheets and macro stats. Only then, things start to settle and the market can recover sustainably.

Friday, April 7, 2023

Portfolio Migration

For the few who follow this blog, I started to implement the last step of my portfolio adjustment as planned at the end of 2021 

I plan to migrate 50% cash to 50% bond in the coming years. The pace of the migration will follow the pace of Fed's rate hikes. My target is to reach 50% TMF when Fed slows down or pauses rate hikes. 

Here is the timeline of my portfolio migration:

1. Dec 2021: 100% TQQQ/UPRO => sell TQQQ => 50% UPRO + 50% Cash - (This is triggered by my decision to retire, a major lifestyle change)

2. Jan 2022: Apply for HELOC as emergency fund - (Prepare for enduring 4~5 yrs downturn w/o any major lifestyle or portfolio change)

3. Feb 2022:  Say Goodbye to W2 - (Retire when my W2 makes no difference as planned in 2012

4. Mar -June 2022: 50% cash => build a bond ladder using 1~1.5 yr treasury - (I didn't go long duration to avoid the problem similar to what brought down SVB).

5. Mar 2023 ~: As my bond ladder reaches maturity, I started to convert them to TMF (and maybe buy some FAS opportunistically) 

Once the migration is done, I plan to hold the position for a while. I won't rebalance unless TMF spikes or UPRO outgrows TMF by a large margin. 

Friday, December 31, 2021

Start a new chapter of my life


When I started this blog over a decade ago, my goal is to save enough to retire in 20~30 yrs. I tried to read books on investment theories and to talk to some experts/professionals. 

What's taught in school confuses me. If professors have any faith on what they're teaching, why don't they put their own money in practice? Most of professionals fare no better, either. What actually makes them money is the fact that they're betting and leveraging someone else's money, they can earn their 2/20 fees, fully participating in the upside but don't have to bare the full blunt of the downside.

I decided to ignore most theories and use a simple framework to beat the market. Assuming the long term return of market tracks the historical average of S&P, the leverage should help my portfolio to outperform the index. For most of  time, I only need to watch for the unexpected, once-in-a-decade market crashes. With some luck, I was able to to take advantage the past two crashes: 2008/9 financial crisis and coronavirus crash. The subsequent rebound and bull market carried me across the finish line at 36~37% ARR over 13 yrs.

In the past few months, I lowered my leverage ratio from 3x  to 1.5x* to prepare for early retirement. I plan to spend 1~1.5% of my asset annually. This budget ensures that I can sustain <22% market corrections(1.5%->1% = ~33% = 1.5 x 22%) and still maintain my current lifestyle. If the ARR of S&P for the next 30~40 yrs is >2%,  my budget (nominal) for living expense should grow a bit faster than the index. 

I decide to withdraw 1~1.5% rather than the usual 4% because I want some safety margin. I hope I can spot the next major crash (>22%) before it happens. In case I fail completely, I want a large cushion allowing me not only to live through a prolonged recession but also to participate in the rebound by re-leveraging my portfolio**.  

Therefore, my strategy remains unchanged: maintain a constant (>1) leverage ratio, cross my finger, and wait for spectacular crashes. The difference between my pre- and post-retirement period is just leverage ratio and margin of safety.

I'm trying to start a new chapter of my life, hopefully spending my time and energy on something other than making money.

1.5x is currently implemented by holding 50% 3x UPRO/TQQQ and 50% cash. The cash position is intended to limit the max drawdown to 50%  in case I fail to anticipate a major crash, e.g. UPRO/TQQQ suffer 99% loss.  I plan to migrate 50% cash to 50% bond in the coming years. The pace of the migration will follow the pace of Fed's rate hikes. My target is to reach 50% TMF when Fed slows down or pauses rate hikes. 

** If I can foresee a major crash is imminent like coronavirus crash, I may proactively de-leverage and even short the market. Otherwise, I just do nothing and wait for the next major crash. I will rebalance (re-leverage) after the crash. The timing of re-leverage depends on the timing of Fed's action. When Fed is all-in, I'm all-in. The re-leverage ratio depends on the scale of market drawdown. If the drawdown reaches epic scale, like great depression or dot.com bust, I'm prepared to go beyond 3x using futures.

Saturday, July 4, 2020

Beat the market (Revisited)

A few posts from Bogleheads.org:

https://www.bogleheads.org/forum/viewtopic.php?t=319283


On Investment Goal

I don't manage other people's money for living. Alpha, beta, or whatever Greek letters mean nothing to me.

The only thing I care about is ensure that the total value of my portfolio is more than the alternative (buy and hold the market) for every single day after the first couple of years.

Let Mbe the market at t0, and Mn at tn, and my portfolio is P0 at t0, and Pn at tn, my relative performance is pn = (Pn/P0)/(Mn/M0).

My definition of beating the market is prob(pn > 1) -> 100% and pn >> 1 if n is sufficiently large (20, 30, or 40 yrs).

I think the definition matters more to individuals investing their own money for retirements than any Greek letters taught in schools.

The Greek letters are there for the financial industry to justify reaping people off their retirement money


Wednesday, February 19, 2020

Coronavirus Impact

If you follow this blog, you might know that I've been expecting a major market crash in the past few years. It's why I named this blog "Expect The Unexpected". 

I've been resisting to make such calls in compliance with my principle of least action.  The argument is, if I have to act more than 2 or 3 times for the rest of my life, I wouldn't be acting on true once-in-a-decade or once-in-a-lifetime events.  

After I learned what's happening in Wuhan and its impact on economic activity in China. I made the call that a crash is imminent. I tried to warn some of my co-workers on the incoming impact. I got the usual Boglehead's responses. Here is an interesting exchange with an experienced investor*:

On Wednesday, February 19, 2020 at 11:36:11 AM UTC-8 XXXX XXXX (Me) wrote:

On Wednesday, February 19, 2020 at 7:56:22 AM UTC-8 XXXX XX (An Experienced Investor) wrote:
"investing isn’t about beating others at their game. It’s about controlling yourself at your own game.”
+1
Retirement planning isn't a race.  Too many people think it is one, and thus compare/worry about numbers that ultimately makes very little sense.
It is a personal journey, and the most important thing is to reach the finish line.  Whether you reach there in a rocket ship or a leisurely stroll, it doesn't really matter. 
You're probably right. In general, wars and pandemics come and go, and life always goes on. For those survive, this event will have little impact on their retirement plan 20~30 yrs down the road. 

But, for those with family members or friends currently locked in Wuhan, the psychological impact cannot be ignored when you see corpses are trucked out of you neighborhood because you'll start wondering whether you're going to have a retirement or not. When such videos are quickly removed from social media and WeChat accounts spreading such "rumors" are swiftly  banned, you cannot help asking, do I have the necessary information to make the right decision?

I have been watching this event unfolding for the past 3~4 weeks, mostly via private communication with friends. I find it takes about 1~2 weeks for the reality on the ground to be propagated into the mainstream media in the US. Few people grown up in the Western can imagine the draconian measures currently being taken in Wuhan/Hubei and contemplate how everyday life and economic activities are affected. They probably won't feel the real economy impact till Q1/Q2 corporate earning season.

I don't want to sound like alarmist here. I agree that most people in the US shouldn't overreact. But, if you have shorter time horizon and/or your investment is tightly coupled with China, you surely have to prepare for embracing the impact.   

Generally speaking, I don't time the market, but I do indulge myself once in a decade. If you can clearly see a rocket ship passing by, why not jump on board?

 * This post is back dated and made public only after I left the company.

Friday, December 20, 2019

心态

投资股市心态很重要。股市很liquid,assets are highly diversified, transaction cost is low,加杠杆方式各种各样,杠杆率可高达20X。而且盘子极大,你一天之内你进出几百万,对市场一点影响也没有。这些都是股市的优点,但是大部分的散户反倒被这所害,关键还是因为他们是抱着一种投机而不是投资的心态。


大家先来看一下股市大盘,比如标普500,几十年下来的长期几何平均收益,daily return大概是~0.02%. 但实际上股市每天的价格1~2%波动是常有的事,也就是你的大脑要应付1:50~100的信噪比。No matter what genius you are, the part of your brain in charge of fight or flight response simply is not equipped to pick up such signals from the noises.


如果你的进出股市的频率是以天或以月计,你不用计算机实现你的策略,而是凭感觉来买卖,那么你会很难挣钱。这并不是说这样的操作没有人会挣到钱,相反每天总是会有很多人挣到钱,但是这些人挣到钱的原因大体都可以归结为运气(概率),而不是他们自己觉得的原因。


能够在这个频段上consistently挣钱是一些HFT和model-based trading strategy, 前者为了几毫秒的竞争优势可以自己去铺光缆, 后者是诸如James Simon之类的牛人. 即便在他们之间,竞争也是异常激烈,每年的利润空间都一直在压缩。

个人投资也并不是没有优势的。对于个人来说,投资的目的一般是为了几十年后的退休,这期间还会一直往里放钱。而机构投资者每年每季度都有报表的压力,一有风吹草动客户就要提现,经常是刚好要加仓的时候。所以个人投资这于专业人士最大的优势是真正长期投资和 commitment of future cash inflow.

个人投资者最好不要快进快出,想着一夜暴富,这是拿自己的短处和别人的长处相拼。不管你用什么投资策略,你至少要觉得这种策略会适用的将来3到5年,甚至更长。如果你觉得3到5年实在太长没法预测,那么你的策略可能本身就有大问题。这其实和很多地主和做实业的time horizon相吻合,很少有成功的投资者在买房产或开公司时想着三五个月后就卖的。

解决了time horizon的问题,再来说一下怎么应对市场的波动. 首先你要知道: Nothing is certain in the market but uncertainty, if you cannot stomach uncertainty, stay away from the market. PERIOD.

有些人用自己今天挣了或陪了多少钱来衡量市场的波动,这显然是有问题的,因为数目大小还和你的基数有关。大部分成熟的投资者知道要看相对的percentage change,而不是绝对的dollar amount。但是如果这个绝对数字和自己每年的工资或生活费用相比太大或太小,他们还是会乱了阵脚或行事轻率,做出些错误的决定。

过去十年,帮助我应付市场波动的方法有两种:一是把价格上的波动转化为时间上的波动来思考。比如2018年年底大跌, 跌幅和跌速都让人心惊肉跳,但如果你换算成时间,那只不过回到一年多以前,换句或说,I am just as rich or as poor as myself about one year ago and my lifestyle has changed very little since then. So, what's the big deal?

又比如,2000/2 dot com泡沫破灭和2008/9次贷危机相比,前者跌幕比后者大多了,但前者只把时间往回推了4,5年,而后者推回了十来年,所以后者对社会,经济的影响远大于前者.换句话说,后者是比前者更难得的一次机遇。

每个投资者都希望自己是个时间旅行者,哪怕是只看到明天报纸的头条就可以发大财了。每次市场的波动其实就是一次短暂的时间旅行,如果2008/9年的你有机会告诉1998/9年的你,市场到哪了,只要你相信世界不会永远停留在1998/9年或回到更以前,你就会发觉这机会和你可以时间旅行看明天的头条没什么区别。同理,2019涨得这么疯其实就是开始透支未来,哪天要回归现在你就不会太惊慌。

我另一种应对市场波动的方法就是,每次我要进入或退出某个仓位前,我都会把支持和反对的理由一一列出来,最好是写下来,然后放在一边凉一凉。过上一段时间在去看一下,这些理由还有没有效。如果因为这段时间内发生的事情自己的想法有所改变,可能自己以前的想法欠成熟,或是自己在思维方式上有重大的盲点。

如果这样反复考虑下来,几个月甚至一两后还是觉得某个策略是可行的话,自己再去执行起来就不会患得患失了。而且十天半个月间的市场波动应该丝毫不会影响我决定的执行。

不少投资者的思维方式还停留在,“我觉得市场明天(或将来)要涨或跌,所以我今天要买或卖”。但这个世界 fundamentally uncertain. 所有的结果都是有可能的,因此我们必须Always expect the unexpected! 在想某个事件发生的可能性时,不能只是是或否,涨或跌, 而应该是一个probability distribution. 我们的投资决定应该是评估了所有的可能后,基于自己的风险承受能力做出的一个trade off, 而不是跟着感觉走。

财经访谈节目上的新闻,专家的意见不是瞎掰就是有意的误导,即便是顶着Nobel光环的经济学家也是如此。这些人对他们的观点但凡有点信心,他们早会在市场上提现了,哪有时间上节目挣那点小钱。不要去指望有谁能给tips发大财,唯一有用的tips是insider information,但没有人会冒着坐牢的危险给你通风报信,有人有时候蒙对了也只是道听途说的结果。

最后聊一下杠杆。炒房也好,办企业也好,一个主要的事情就是融资。owners一般不想冲稀自己的股份,但只要一借钱就绕不过杠杆的问题。

房贷是大部分人加杠杆的方式,但房贷的利息其实是比较高的,而且银行的rate滞后Federal rate cut 很多。我记得2009-2011间,我天天给银行打电话想借钱,但每家银行都忙着修补自己的balance sheet, 贷款的门槛很紧,你只靠房贷会错失很多机会。

当时有个朋友给我介绍了Interactive Brokers,如果你有比较高的balance,IB的margin rate只比federal rate高一点,而且它紧跟rate cut。如果你已经决定了要上杠杆,IB的 margin loan可能要比房贷合算,而且借款的多少长短很随意,不像房贷总是一大笔长期的commitment。当然你必须维持足够大的cushion,不要太贪心,否则margin call就麻烦了。

还有一种加杠杆的方式是ES-minis. 它成本比IB的margin loan还要低些,杠杆一直可以加到20X以上。有兴趣的朋友可以自己去研究一下。我在这就不多讲,免得把一些不适合做金融衍生物的人引导上破产跳楼之路。

我对投资感兴趣,不但因为这是我实现财务自由之路,而且是对智力的挑战,行为处事的考验.o In the world of investing, you have to be curious, humble and brutally honest with yourself. At the same time, you must also be a  decisive and displined practioner, able to execute your strategies with a sniper's precision, one shot, one kill.