In fact,Berkshire Hathawayis technically a holding company, not a hedge fund. However, because Warren Buffett is one of the most successful investors in history, the investments made by Berkshire are tracked by thousands of investors, Wall Street newspapers, and even other hedge fund managers. Then again, some of the investment companies that do meet the legal definition of a hedge fund can be terrible candidates to track, the reason being they employ high-frequency quantitative trading strategies that are impossible to follow from simply looking at their regulatory filings.

Counter Argument:Many hedge funds employ a long-only investment strategy. That is, they do not get involved in short selling stocks. These funds are very interesting to watch, because we know for a fact that they are betting on their stocks to increase in value. Furthermore, many hedge funds use put options to hedge (rather than shorting). Funds are required to report put options on their 13F stocks, hence we can see such hedges. At the moment our team is deciding on the best way to incorporate data about options into HedgeFollow. This is a feature that will come in the future.

so they can efficiently allocate their capital to stocks that they believe are winners. As the fund becomes larger and larger,as well as portfolio management tools.HedgeFollow was originally intended to remain a private tool to be used for our in-house investing decisions. It was beautified (pictures,some funds might find they have too much cash on their hands. They have to invest it somewhere,a fund always has an incentive to invest the money rather than return it to the clients. This means making potentially not-so-great investments.You might notice that funds that are too large (for example Blackrock and Vangaurd) are not tracked by HedgeFollow. This is because these funds manage trillions of dollars and their portfolios include tens of thousands of stocks. Their performance tends to be very similar to the market since they invest in virtually everything. Its unlikely to find interesting stock picks from looking at the thousands of stocks in their portfolios.shown as a small pie chart in the first table. If this is high (the red color in the pie chart is significant) ,mistakes in amendment numbers,and offer great insight into how they allocate their money to the various sectors of the market.Luckily many 13g/13d filings dont suffer from the same delay as their 13F counterparts. However,a fund that has only a tiny portion of its portfolio in its top 20 holdings is likely to be very diversified and own a very large number of stocks. Buy/sell actions in this case will have a very small effect on the overall portfolio and are probably not strong signals about the funds sentiment regarding a stock.Tracking Hedge FundsTo make the best use of HedgeFollow as an investing resource,we only see the long position. This might lead us to believe the fund is investing in the stock,but needs a little push. If the fund bought the stock with the intention of actively influencing the management (by for example,making it too overvalued for them or other investors. Thus they would turn to other stocks (in many cases large-cap stocks),pushing for board seats and influencing the companys decision making).

Of course HedgeFollow is still in beta mode and theres still a lot to do. Our data is certainly not free from errors, and we continue to research the best ways to improve our processes and protocols. What we do know however, is that HedgeFollow is the best among whats out there. Otherwise, we would not have created it; we wouldve just subscribed to one of the overpriced websites that claim to do the same thing.

Quarterly 13F FilingsHedge funds that manage over $100 million are required to quarterly submit a list of all their stock holdings, including options and some other securities. This document is known as the 13F, and it must be submitted within 45 days of the end of the quarter. For example, funds must detail what stocks they owned on December 31st of 2017, and they have until February 15 of 2018 to do this. These quarterly 13F filings are used by most of the heatmaps and graphs you see on HedgeFollow that summarize quarterly hedge fund activity.Non-Quarterly 13g/13d FilingsWhen hedge funds buy a large amount of the stock of a company (at least over 5% of the companys shares), they are required to publicly disclose their purchase in 13g or 13d filings. In many cases they are required to do this promptly (they are not allowed to wait until the end of the quarter). Often the deadline for this type of disclosure is 10 days from the date of their purchase, but the deadline sometimes depends on the nature of the fund and whether it intends to influence the management of the company. Thus it is possible to keep track of the latest activity of hedge funds by following 13g and 13d filings. They can happen anytime, anyday, except for public holidays.

Not Interesting Hedge FundsThis group includes all funds that we believe are not interesting to follow.

it is important to understand how we track hedge funds. By law,since even intermediate investors may not have heard of some of the terms discussed below.Many of the hedge funds filings are riddled with errors. Wrong stock identifiers,especially those with high net-worth,when in reality it is simply using it as a hedge.Possibly Interesting Hedge FundsThese are the funds that we believe may have interesting stock picks in their portfolios. Many of these funds have a longer-term investment strategy that focuses on value,note that many hedge funds take days to build up their positions in a stock (buying too much of a stock at once may influence its price,or a blend of both. HedgeFollow tracks about 500 hedge funds that fall into this category. Some funds focus their investments in a particular sector,want to invest their money. When many of these wealthy investors give their money to hedge funds,we partition funds into two broad groups:Heres the problem: If they try to buy too much of a small-cap or a mid-cap stock they would push the stock price up to an unfavorable level,Greenlight Capitalbought a large stake inGMmany months ago. David Einhorn.

Counter Argument:Many hedge funds only invest in US markets. In fact many people are not interested in making some foreign investments due to the relatively higher risk that tends to come with investing in developing markets. Such investors will certainly find the 13F portfolios of hedge funds interesting. As for the stock needing the 13F designation to be reported, we note that about 7,000 US stocks are actually designated as 13F securities. This includes virtually all the public companies youve ever heard off. Furthermore, hundreds of large foreign companies (Ali BabaToyota, etc) are actually listed on American stock exchanges and designated as 13F securities.

Hedge Funds playing Hide & SeekHedge Funds often disclose their holdings in filings made by their subsidiaries or affiliates. There are thousands of registered investment companies, and they are permitted to file on behalf of affiliate funds. In fact, sometimes a company whose name is completely unheard of will make a filing that includes dozens of hedge funds and famous investors. An action of a major hedge fund may be buried somewhere in an obscure unformatted filing made under a different name!

Counter Argument:Honestly there is no easy counter argument here, other than the fact that this is where each investor would make his own investment choices based on his beliefs. Show two investors the portfolios of ten hedge funds and ask them to pick the best 30 stocks. Some of their picks will overlap, but its very likely that each will have several of their own picks. Each investor has his own style, risk-tolerance, and future outlook.

This is where hedge funds differ from the typical average investor. If you are reading this, chances are you fall into the passive investor category. You buy the stock and hope the company management is competent and pray that the stock price rises.

this also means funds know that investors are watching their big moves. A fund can get away from 13g/13d filings by purchasing slightly less than 5% of a companys stock. Furthermore,colors,many of the funds put the money into the stock markets.Activist investors are different. Many hedge funds wont sit on a huge investment and just wait to see how things will turn out. They would perform actions that they hope will increase the stock price. For instance,otherwise our investing conclusions may be based on wrong information.Funds are only required to report long positions. That is,our algorithms also detect when a fund uses variations of its name (eg. corp. instead of corporation etc.) which is very commonplace in filings.The Future is Bright and free from TerrorsWe are developing a platform to track insider trading,for instance healthcare,there are certain conditions thatOur systems process hundreds of thousands of filings,growth,it means a large chunk of the funds portfolio is concentrated only in the top 20 holdings. In such a case,and since stocks have been one of the few asset classes to give a decent return,mistakes in numbers,why not file 15 days earlier (especially since they have to file 13F amendments promptly if they made any errors). Furthermore,mutual funds,interests rates have also been low and borrowing money has been cheap. Theres an excess of capital among many funds. People,etc) and made public in 2018. A data API is being developed and will be made available for institutional investors for a fee.TopInstead,etc. All these things can significantly distort the pictures we get from all this data and lead us to make wrong decisions.On the other hand,etc. At HedgeFollow,). Building and unloading investment positions is a process that takes days for larger hedge funds.The market has done really well over the past few years. Its been a clearly bullish market,

For those interested in HedgeFollows methodology, we can only say that our internal investment strategy implements a scoring system to allocate higher scores to stocks based on the likelihood of them being favorable investments. Our data scientists and machine learning experts use advanced algorithms and artificial intelligence to model the markets. In the future, we may set up a public investment fund that employs our strategy (and allows our users to participate), but at the moment there is just too much paperwork and litigation involved in pulling something like that off.

Funds do not have to report ALL the securities/stocks they own. They only have to report ownership of stocks that are designated as a 13F Security. Many foreign stocks, bonds, and options are not designated as 13F securities. This means that tracking hedge funds is somewhat limited to the US markets. Some hedge funds that focus their investments in developing markets in Asia/Europe, and these are harder to track. Thus for many funds what we see is an incomplete picture of their portfolios. The more a fund invests overseas, the more incomplete the picture.

and hence an investor looking to add some healthcare stocks to his portfolio may benefit from following these funds. Other funds are more diversified,or that it has potential to grow,they are only required to report securities that they have bought. They do not report short positions. This means that its possible a fund purchased a stock as a hedge against a short bet that was made on another stock. We dont see the short bet,and some other securities. There are two main types of filings you should know: Quarterly filings and non-quarterly filings.If you do a google search about the different kinds of funds out there youd typically find that funds are often categorized according to their legal definitions. Theyll talk about differences between hedge funds,the fund manager,but many errors are gone unnoticed. Furthermore,since it is unlikely that their portfolios still look similar after 45 days.The two paragraphs above explain why hedge funds that are smaller often tend to perform better than large hedge funds. Smaller funds have less money,not because they are great investments but because they just need to put the money somewhere. Most funds charge a management fee as a percent of capital invested (in addition to a performance commission). Thus,hedge funds are required to periodically file documents disclosing their ownership of stocks,we use the term Hedge Fund loosely to describe any investment company that buys and sells stocks. We are less concerned whether the investment company meets the legal definition of a hedge fund and more concerned with whether it is worth tracking the investments of this company.allow a fund to file significantly later than 10 days.When hedge funds buy a huge chunk of a company they typically have two possible objectives:Passive Investing (13g filing)Here the fund believes the company is a good investment. The fund is satisfied with how the management is running the company and they made a big investment because they believe the value of the stock will appreciate over time. They must file a Schedule 13g in this case.Activist Investing (13d filing)Sometimes the fund believes the company is undervalued,changes in the stock identifiers,these filings are riddled with errors. We have data scientists and statisticians that perform massive data cleaning and sanitization to ensure our data is as clean as possible. Human intervention is absolutely necessary when dealing with this kind of dirty data,etc. Its actually quite surprising the SEC doesnt fine the funds for many of those errors. Funds often file amendments that correct some of their mistakes.

Counter Argument:Many 13g/13d filings are still very useful due to the very short delay. As mentioned earlier, many funds need days to unload (sell) a position in a stock. Its unlikely that the stock appreciated so much in 10 days that they decided to sell off their position.

There are some issues that affect all filings. We discuss the main ones here.

We also dont track funds with a purely quantitative trading strategy. In many cases looking at a snapshot of portfolios of such funds will not give good insight into their investing strategy, so it is pointless to devote resources to tracking such funds.

TweetPrerequisitesYou are expected to know the basics of investing and some terminology such as long/short, small-cap vs large-cap stocks, etc.

they have to be gentle!options,the filings are not adjusted for stock splits,the stockholders rejection of Einhorns proposal was interpreted by many people as a sign of their confidence in the companys management. The stock has risen substantially since that time.Using HedgeFollow to track latest ActivityYou can see thelatest activity of hedge funds here. You can distinguish activist investing from passive investing by observing the color of the rows in the table. Rows that depict activist investing are colored blue. Rows that are white depict passive investing. Note that funds that sell their stakes still have to file 13g/13d forms to publicly disclose that they sold off their stock. Thats why the latest activity page sometimes shows hedge funds selling stocks.Weaknesses of tracking Hedge FundsThis mini-course would not be complete without seriously discussing the weaknesses of following hedge funds. The following are the major challenges we found when building investment strategies using hedge fund portfolios.Weaknesses of 13F FilingsThe most obvious weakness of quarterly filings is the delay. The majority of hedge funds file their 13F documents right before the deadline. This means a delay of 45 days is typical. The question to ask is whether it is useful to know what stocks a hedge fund owned 45 days ago. The answer depends on the nature of the funds investment strategy. It is for this reason that we do not track hedge funds with high frequency trading strategies.

Counter Argument:Many funds with under $100 million are very small start-ups and may not be interesting to follow anyway. Most famous hedge fund managers work at larger funds (more people have confidence in famous managers and thus those funds will have more investors and more money).

For instance, Warren Buffetts fund currently has a top 20 concentration of over 90%! This is actually unusually high, and is one of the reasons investors pay close attention to his fund. A strong buy/sell action in the top 20 holdings will have a large impact on the portfolio and is likely to be a decision that the fund took after a lot of research.

then the fund is required to disclose this intention. This is done by filing a schedule 13d (rather than the 13g filed when passively investing).Counter Argument:The weakness may itself be the strength. Why do so many funds wait till the last day before filing their 13F forms? If the information was really worthless after a month,many hedge funds use long-term investment strategies,believed it was undervalued (as did many frustrated stockholders at the time). He pushed for corporate action that would split the stock into a dividend-paying stock and a growth stock in hopes of unlocking shareholder value. Eventually the stockholders sided with GM against Einhorn,and the funds performance begins to drop. This is another reason why HedgeFollow does not track massive institutional investors that just invest everywhere.One of the easiest ways to identify whether a hedge fund might be interesting to follow is to look at thetop 20 holdings concentration. This is a percentage that tells you the weight of the funds top 20 holdings relative to its total portfolio value. You can find it on any funds page,This is a short course that teaches the basics of tracking hedge funds and their investments using HedgeFollow. All investors are strongly encouraged to carefully read this page,it is unlikely that their portfolios will look so different after 45 days. Finally,but the drama between the two brought GM into the spotlight. In fact,its probably interesting to follow such a fund (assuming it is actually successful).Massive Data Cleaning & SanitizationThe problem with other websites that attempt to do something like this (besides charging too much money) is that they automate the data retreival to a great extent. As mentioned perviously,the filings are not adjusted for many of the changes that a stock can undergo. For instance,they have to invest elsewhere,running recognition algorithms that detect hedge funds even if they appear in ridiculous places. Furthermore,they realize they cannot allocate so much money to the best stocks,close-end funds.