Successful Trader's Cheat Sheet
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When comparing money market mutual funds a few patterns arose. First, when it comes to expense ratios, or the annual fees you’ll pay to own the funds, 0.25% is a threshold that separates the top and bottom half of the money market mutual funds in my short list. When it comes to yields, 2.1% is a defining 7-Day Yield threshold. For YTD yields, 1.4% is a benchmark that separates the pack.
If this sounds similar to banks’ high-yield savings accounts or money market accounts, it is. The largest difference lies in the ability for yields on money market mutual funds to rise proportionately with interest rates. For example, as interest rates have risen, the yields on most bank  money market accounts (which are set by the banks themselves) have stayed relatively flat, while money market mutual fund yields have increased.
You can open a money market account either online or in person. Be prepared to provide your Social Security number and contact information, along with at least one form of identification, such as a driver’s license or a passport. (For a joint account, everyone wanting access to the account must provide this information and valid forms of identification.)

Institutional prime and institutional municipal money market mutual funds are funds that do not qualify as retail funds—i.e., they may be held by institutional investors. These funds are subject to potential liquidity fees and redemption gates, and will price and transact at a floating NAV (meaning that the NAV will be priced to 4 decimal places, e.g. $1.0000, and will experience fluctuations from time to time).

While some mutual funds are index funds, which aim to track the performance of a specific market index, most are actively managed, meaning fund managers follow an investment strategy to buy and sell a variety of securities in an attempt to beat the market. There are funds that focus on nearly every part of the market, and buyers can invest in a variety of assets including equities, bonds, real estate and commodities.
That said, safety is still a top feature of these financial tools. Money market accounts are insured up to $250,000 at banks that are insured by FDIC. The National Credit Union Share Insurance Fund (NCUSIF) provides all members of federally insured credit unions with $250,000 of coverage for single ownership accounts at a National Credit Union Administration (NCUA) credit union.
1) Controlled supply: Most cryptocurrencies limit the supply of the tokens. In Bitcoin, the supply decreases in time and will reach its final number sometime around the year 2140. All cryptocurrencies control the supply of the token by a schedule written in the code. This means the monetary supply of a cryptocurrency in every given moment in the future can roughly be calculated today. There is no surprise.
Essentially, any cryptocurrency network is based on the absolute consensus of all the participants regarding the legitimacy of balances and transactions. If nodes of the network disagree on a single balance, the system would basically break. However, there are a lot of rules pre-built and programmed into the network that prevents this from happening.
Basically, cryptocurrencies are entries about token in decentralized consensus-databases. They are called CRYPTOcurrencies because the consensus-keeping process is secured by strong cryptography. Cryptocurrencies are built on cryptography. They are not secured by people or by trust, but by math. It is more probable that an asteroid falls on your house than that a bitcoin address is compromised.

In 1998, Wei Dai published a description of "b-money", characterized as an anonymous, distributed electronic cash system.[12] Shortly thereafter, Nick Szabo described bit gold.[13] Like bitcoin and other cryptocurrencies that would follow it, bit gold (not to be confused with the later gold-based exchange, BitGold) was described as an electronic currency system which required users to complete a proof of work function with solutions being cryptographically put together and published. A currency system based on a reusable proof of work was later created by Hal Finney who followed the work of Dai and Szabo.[citation needed]

Looking closer we see that if you can meet the $3,000 minimum investment size, Vanguard’s VMMXX offers an appealing combination of relatively high returns with low expenses. If you don’t have a large amount of cash to invest, you should note that both FMPXX and FIDXX have $1MM investment minimums. If you have less than $1,000, SPRXX doesn’t meet the yield and expense ratio thresholds we laid out, but it doesn’t have an investment minimum.