BC FINANCE
Saved by @tradrdoc

Our intuitions often leads us astray. A good reminder: study counterintuitive math and economic results.

Here are 9 of them 🧵

 The Birthday Paradox

In a room of 23 people, there's a >50% chance that 2 people share the same birthday.

This type of probabilistic thinking does *not* come naturally to many people.
The Coastline Paradox

Fractal geometry is also confounding:

The coastline of a landmass does not have a well-defined measurement. As the unit of measurement gets smaller (eg. from KMs to cm), the length increases without limit.
Winner's Curse

In an auction, the winning bid will usually exceed the intrinsic worth of an item leading to a significant overpay (and negative net profit for the winner).
Braess's Paradox

Removing an extra road can make everyone's commute time faster.

Why? The existence of a "fast" road leads to congestion because everyone uses it. If you remove the shortcut, traffic flows better.
Market for Lemons

If a seller has slightly more info than a buyer (eg used cars), it can lead to market failure:

◻️Buyer will pay price below market (b/c they can't confirm quality)
◻️High-quality sellers leave market b/c can't get good price
◻️Only low-quality sellers remain
The Potato Paradox

If you take 100lbs of potatoes which are 99% water by weight and you let it dry so that they are 98% water, their new weight is 50lbs.
The Pizza Paradox

One 18-inch pizza has more "pizza" than two 12-inch pizzas (still trying to process this fact).
Littlewood's Law of Miracles

An example of the law of large numbers: A person can expect to experience events with odds of one in a million at the rate of about once per month.

(Similarly: in a world with ~8B people, a one-in-billion event will happen 8x a month)
Queuing Paradox

If bank customers take on average 10 minutes to serve and they arrive randomly at a rate of 5.8 per hour...then the waiting time for

◻️one teller is *5 hours*
◻️two tellers is *3 minutes*

Waiting time is reduced by 93x by adding a second teller.
PS. I write interesting threads like this 1-2x a week. Follow @TrungTPhan to catch them in your feed.

Also check out my weekly Saturday newsletter:https://t.co/jGZs8brnVR
Sources

Here's the breakdown of the queueing theory: https://t.co/2vunn5mMTz

Check this awesome article for dozens more counterintuitive math, science + physics facts: https://t.co/8sejjm6AkH
VERY counterintuitive fact: Gabriel's Horn is a geometric figure with:

◻️ *infinite* surface area
◻️ *finite* volume
Deep dive on the Birthday Paradox https://t.co/3AAXUUVGP9

More from Trung Phan 🇨🇦

Trung Phan
Trung Phan
@TrungTPhan
Steve Jobs famously said innovation is "saying no to 1000 things" before you say yes.

For more than a decade, Apple has used Pablo Picasso's Bull to drive home the lesson.

Here's a breakdown 🧵


In Dec. 1945, Picasso created "The Bull", a series of 11 lithographs (stone prints).

With each successive print, a bull is simplified and abstracted. Picasso's goal was to find "spirit of the beast".

At Apple, employees are taught this philosophy.


Below are the 1st, 4th and last stone print.

The bull progresses from:
◻️a realistic drawing
◻️to a deconstructed image w/ the famous "abstract" style
◻️to lines outlining a shape

Through 11 iterations, Picasso simplified the image until it captured the "essence" of the bull.


Picasso said of the abstraction process:

"Two holes. That’s the symbol for the face, enough to evoke it without representing it. But isn’t it strange that it can be done through such simple means? Whatever is most abstract may perhaps be the summit of reality.”


Enter Apple University.

In 2008, Steve Jobs tapped the dean of Yale School of Management to create an internal training curriculum for Apple.

The program was meant to teach new employees Apple's culture and design philosophy (the teachings are rarely shared with the public).
ALL
Trung Phan \U0001f1e8\U0001f1e6
Trung Phan 🇨🇦...
@TrungTPhan
The Wall Street Bets due diligence on Wendy’s is gold.

The catalysts are:
◻️ The release of a new summer salad
◻️ The @Wendys Twitter account, which has mastered “meta pragmatic roasting” (which is effective with younger people)
◻️ The fact it literally sells chicken tendies


OP:

Here’s a more fundamentals-driven analysis of Wendy’s

https://t.co/A2k19S9M7J


😂😂😂


Further Wendy’s analysis from @CliffordAsness !!
PUMP DUMP
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Trung Phan \U0001f1e8\U0001f1e6
Trung Phan 🇨🇦...
@TrungTPhan
At 40, Jim Simons left a famed math career to launch the most successful hedge fund ever: Renaissance Tech.

Even though it only won 51% of trades, the fund made 66%/yr for 30yrs (Simons worth = $25B). It's a story of genius, but also of how hard it is to beat markets.

THREAD🧵


1/ The crown jewel of RenTech is The Medallion Fund (launched in 1988).

◻️ From 1988-2018, it posted a return of 66%/yr (39% after fees)
◻️$1 invested in 1988 is now worth $14m+
◻️ Cumulative profit = $100B+ even with an avg. fund size of only $4.5B


2/ Before creating what Bloomberg calls the “greatest money-making machine ever”, Simons was a legendary mathematician.


3/ While at Stony Brook, Simons started trading commodities (with money staked by former MIT classmates).

The side investing was good enough that Simons -- also going through a divorce -- decided to leave academia and launch his own money management firm in 1978: Monemetrics.

4/ At the time, there were 2 main investment approaches:

◻️ Fundamental (understanding and forecasting an asset based on key drivers)
◻️ Technical analysis (studying price charts)

Simons’ strategy was to place a “fundamental lens” on currencies (eg. supply and demand).
ALL
Trung Phan \U0001f1e8\U0001f1e6
Trung Phan 🇨🇦...
@TrungTPhan
The most memorable interview I did this year was w/ Stanley Druckenmiller, who famously made $1B shorting the British Pound.

The trading legend's track record includes a 30-year stretch returning 30%+ a year (without a single down year).

Here are 8 investing lessons🧵

1/ Make concentrated bets in high conviction plays


2/ Concentrated bets can sometimes *reduce* risk


3/ Use a multi-disciplinary approach to investing


4/ Know when to sell (he never uses a stop loss)
FINANCE
Trung Phan \U0001f1e8\U0001f1e6
Trung Phan 🇨🇦...
@TrungTPhan
Peter Thiel's 2014 Reddit AMA is full of nuggets 🧵

1/ His biggest investing mistake was *not* doubling down on Facebook


2/ Thoughts when he first met Elon


3/ Whether he has a "ban" on hiring MBAs


4/ Why he invested in SpaceX


5/ His reaction to the movie The Social Network
ALL

More from Finance

Abayorr Mi
Abayorr Mi
@iamabayorr
10 Biggest Bank Robberies of All Time

Thieves made off with billions in these daring, historic heists.

A THREAD


10. The Dunbar Armored robbery

Stolen: $18.9 million

In 1997,6 men pulled off what remains the biggest cash heist in the history of the United States. The leader was Allen Pace, who turned out to be the worst "safety inspector" the Dunbar Armored trucking company ever employed.


Pace timed the security cameras at the Dunbar facility in Los Angeles so he could avoid them, and recruited five childhood friends to help him rob the vault. They broke in, assaulted two guards on their lunch breaks and loaded $18.9 million dollars into a U-Haul.

They almost got away with it — except one robber got sloppy and lent some of the stolen cash to a friend without removing the original cash straps.


9. The United California bank heist

Stolen: $30 million

In 1972, Amil Dinsio, a professional criminal from Ohio, assembled a gang of six robbers and flew them to California. They rented a town house and planned a heist on a bank where they had (mistakenly) heard President
FINANCE
Brian Feroldi
Brian Feroldi
@BrianFeroldi
1/ My Mission: To Spread Financial Wellness (thread)

Here’s what "financial wellness" means to me

⬇️⬇️⬇️⬇️⬇️⬇️⬇️⬇️⬇️⬇️

2/ Mindset

Humans are programmed to think short-term

Evolutionary, thinking short-term makes sense. It helps with survival.

Financial wellness is all about training yourself to develop a long-term mindset

Not easy -- it takes practice


3/ Mindset

If you join the right tribes, you can’t help but improve

My favs:
@AffordAnything
@ChooseFiFI
FinTwit
@MicroCapClub
@themotleyfoolFool
@visualizevalue

Twitter / Podcasts / Blogs / YouTube -- when used correctly -- are amazing


4/ Mindset

Educate yourself - constantly!

Especially about:

1⃣Money
2⃣Relationships
3⃣Health

These 3 categories have an outsized influence on all areas of your life

Books


5/ Career

In the beginning, focus on growing your income

Do more than what is expected

Become a lynchpin

Find a career that you ENJOY (<- important!) that also has high-income potential

Start a side hustle (<- important!)

Build your talent
FINANCE
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Christian Reshoeft
Christian Reshoeft
@reshoftc
(Thread) Why do I own individual stocks?

Thesis:

1. The digitalization of our world is 10% complete.
2. This megatrend will continue for at least another decade.
3. If you enjoy spending your free time on individual stocks, then the potential for outsized returns is possible.

What is my approach?

There are two parts to my portfolio.

- 40% in Vanguard All-World ETF. This is on autopilot w/ regular contributions.
- 60% in what I consider to be high growth stocks

I keep a balance by adding cash. No shuffling around unless it gets too out of whack.

The latter is the interesting part.

I invest in companies that can

1. successfully disrupt an industry with new business models $TTD $SQ $PTON $TDOC

2. further enable the digital transformation with their services and infrastructure $ZS $HUBS $TWLO $CRWD

I intend to hold my shares indefinitely and allow my investments to compound over time.

I don’t believe that it is possible to time the market. Markets go up and down. I hold on knowing that quality businesses tend to bounce back.

The list of reasons to sell is always long.

If you have full conviction in your holdings, then no single piece of “infotainment” should make you change your mind.

Ignore it + people who make predictions about the economy.
TRADING , FINANCE
Simon Barnett
Simon Barnett
@sbarnettARK
Anyone have any opinions on how self-insured employers consider innovative healthcare offerings to pass on to their employees?

As I understand it, by shouldering the financial risk, self-insured employers can curate a list of more relevant benefits ... (1/10)

... thereby avoiding paying out lofty insurance premiums for services that its employees don't use or want. There seems to be a long list of intangible benefits having to do with talent acquisition and retention, but I'd like to understand the cost equations more fully. (2/10)

In the context of multi-cancer screening, I'm skeptical that it could be cost-saving for small or medium-sized employers (<500 employees). Assuming a representative sample of the population, there are simply too few cancers and too many false positives w/ expensive ... (3/10)

... diagnostic follow-ups to bend the unit-economics in the right direction. Indeed, for larger self-insured employers, maybe on the order of thousands of employees, the dynamics may change. Each true positive is a chance to save on treatment cost and (possibly) to ... (4/10)

... extend life. However, employers won't likely be able to distinguish between true life-extension and lead-time bias without prospective, randomized studies, which are due out in the 2024-25 timeframe. Still, these likely will include interim endpoints only. (5/10)
FINANCE
Neil Thomas \u725b\u7287
Neil Thomas 牛犇...
@neilthomas123
THREAD: Who are the rising stars of Chinese elite politics in the central Party-State bureaucracy?

For @MacroPoloChina I analyzed last year's ministerial-level promotions to posts in Beijing

TLDR: Ties to Xi Jinping—or a Xi ally—are very helpful! (1/14)

https://t.co/kO2A0Efyq2


Seven politicians were promoted to ministerial-level positions in central Party agencies last year

All are likely to feature on the next Central Committee selected at the 2022 Party Congress

Some could make the CCP's elite 25-person Politburo (2/14)

https://t.co/kO2A0Efyq2


Likeliest for the Politburo is Meng Xiangfeng, new Executive Deputy Director of the CCP General Office

He would replace Xi ally Ding Xuexiang as CCP chief-of-staff if Ding is promoted further in 2022

Meng worked under Xi allies Cai Qi in Hangzhou and Chen Xi in Liaoning (3/14)


Less likely for the Politburo but still important is Jiang Jinquan, new Director of the CCP Policy Research Office

He replaces 5th-ranked leader Wang Huning who led the Party's brains trust for 18 years

Wang remains prominent and will be <68 in 2022, so he'll stay around (4/14)


Other notable central Party promotions include Li Shulei and Liang Yanshun, who both assisted Xi when he led the Central Party School from 2007-2012

Li is a political conservative who is said to be quite close with Xi, even drafting his 2014 speech on culture and art (5/14)
FINANCE

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Jaya_Upadhyaya
Jaya_Upadhyaya
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SRI KUMARIAMMAN, KANYAKUMARI (TN)
#bharatmandir #navratri2021

Created by Maharshi Parasurama and also one among the 108 Shakthi Peethas in the world. The name Kanyakumari stands for Kanya(Virgin) and Kumari(girl).
Devi took this form to vanquish the demon Banasura
@GunduHuDuGa


Once, Banasura(grand son of Mahabali) obtained a boon from Shiva that he could be vanquished only by a virgin.
So, Devi took the form of a kumari and started meditating with the desire to marry Shiva at Suchindram.
Pleased Shiva fixed the midnight hour for marriage with Devi.


Devarshi Narada knew that the marriage would end the chance of killing Banasura. So, he assumed the form of a cock and crowed. Shiva returned back to Suchindram thinking that it was dawn.
Angered, Devi cursed that all food and articles meant for wedding turn into sand and shells


When Banasura heard about Devi’s beauty, he tried to take her by force. Devi, then, killed him and granted the wish of Devas to remain there always protecting them.
The murti of Devi stands with a rosary in hand. Her diamond nose-ring is said to be visible even from the sea.


Once an ancient mariner mistook it for a lighthouse and sailing towards it, his ship wrecked upon the Kanya Kumari rocks. In order to prevent such a tragedy from happening again, the eastern door of the shrine is opened only on five special occasions throughout the year.
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Patrick Chovanec
Patrick Chovanec
@prchovanec
1. Let's talk about Albanians. No, not THOSE Albanians, in the Balkans. The Caucasian Albanians, the pre-Turkish inhabitants of the land now known as Azerbaijan. 🇦🇿


2. Yeah, I know, there's also an "Iberia" there, which should cause even more confusion (with Spain), but let's focus on "Albania".

3. This ancient church in the village of Nij (or Nic), just south of the Caucasus Mountains, belongs to the Udi people, a Christian minority in Azerbaijan descended from the area’s pre-Turkic Caucasian Albanians. 🇦🇿


4. Nearby are the ruins of the Caucasian Albanian capital of “old” Gabala (Qebele), where I was given a personal tour by one of the resident archeologists (just for showing up). 🇦🇿


5. Only a very tiny portion of the extensive site has been excavated. “Every place you dig,” the archeologist told me, “you will find artifacts.” This whole field is a city waiting to be uncovered.
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Hindu Media Wiki
Hindu Media Wiki
@HinduMediaWiki
Speech Delay is most common in children nowadays

In ancient times, our grandparents used to follow typical natural way of caring the needs of a child. All they used were more of natural products than chemical based for the growth of child.


One of major step followed was to feed Gurbach Jadd/ Vasa Kommu/ Acorus Calamus for initiating good speech ability in a child. This stem was needed to babies on Tuesdays and Sundays in mother's milk.

Vasa is feed to baby after the 1st bath on 12th day in week. Weekly only thrice it is fed and named as :

Budhwar - Budhi Vasa
Mangalwar - Vaak Vasa
Ravi Vaar - Aayush Vasa

This stem is burnt and rubbed against the grinding stone in mother's milk or warm water to get a paste


The procedure to make it is in the link

https://t.co/uo4sGp7mUm

It should not be given daily to the child. Other main benefits are

1. It clears the phlegm in child's throat caused due to continuous milk intake. It clears the tracts and breathing is effortless.
2. Digestion

For children who haven't got their speech and is delayed than usual should feed this vasa on these days in week atleast for 6months. Don't get carried away with this dialogue
"Some gain speech little late"
CHILDREN
Robin Berjon
Robin Berjon
@robinberjon
Recently, the @CNIL issued a decision regarding the GDPR compliance of an unknown French adtech company named "Vectaury". It may seem like small fry, but the decision has potential wide-ranging impacts for Google, the IAB framework, and today's adtech. It's thread time! 👇

It's all in French, but if you're up for it you can read:
• Their blog post (lacks the most interesting details): https://t.co/PHkDcOT1hy
• Their high-level legal decision: https://t.co/hwpiEvjodt
• The full notification: https://t.co/QQB7rfynha

I've read it so you needn't!

Vectaury was collecting geolocation data in order to create profiles (eg. people who often go to this or that type of shop) so as to power ad targeting. They operate through embedded SDKs and ad bidding, making them invisible to users.

The @CNIL notes that profiling based off of geolocation presents particular risks since it reveals people's movements and habits. As risky, the processing requires consent — this will be the heart of their assessment.

Interesting point: they justify the decision in part because of how many people COULD be targeted in this way (rather than how many have — though they note that too). Because it's on a phone, and many have phones, it is considered large-scale processing no matter what.
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Professor
Professor
@DillikiBiili
Some ofthe biggest breakouts occur after Volatility Contraction, the analogy is that more a spring is pressed, higher it jumps whenever it gets released.

There is a VCP Scanner on chartink (Not mine). This may also be used to find potential Breakouts.
SCREENERS , TA SCREENERS