Which robos got off to the fastest start in 2016?

Almost all robo-advisers have grown in some shape or form between the start of last year and this year. Some of the well-known online automated investment platforms that embraced a business-to-business model have grown tremendously. Take Betterment, which has Betterment Institutional and now Betterment for Business — it has grown to more than $3 billion in assets under management compared to $1.1 billion, where it was in January 2015. Future Advisor started at $232 million in January 2015 and now has $695 million, after being acquired by BlackRock this summer. Hedgeable hit $3.5 million, up from just a third of a million in the first month of last year. Even Acorns, which takes consumers' leftover change from bank account purchases and makes a portfolio out of them, has spiked up significantly. And of course there are the giants. Vanguard and Charles Schwab & Co. made a splash in the first half of 2015 when they launched their own automated platforms called Vanguard Personal Advisor Services, a hybrid model; Schwab Intelligent Portfolios; and adviser-facing Schwab Institutional Intelligent Portfolios. These numbers are from the company's most updated SEC Form ADVs, except for Charles Schwab & Co. and Vanguard, which come from company earnings.

Robos	2016 Jan	2015 Jan	Yearly change	2015 by quarter
Financial Engines**	104,426	88,200	▴18.4%
Vanguard**	31,000	N/A	N/A
Schwab*	5,300	N/A	N/A
Betterment	3,228	1,105	▴192.1%
Wealthfront	2,613	1,703	▴53.4%
Personal Capital**	1,518	862	▴76.2%
Future Advisor	695	232	▴199.2%
Asset Builder	686	616	▴11.4%
Blooom	157	26	▴501.8%
Acorns	87	5	▴1712.5%
SigFig	70	59	▴17.6%
WiseBanyan	35	20	▴74.6%
Hedgeable	35	3	▴1278.0%
Covestor	16	27	▾38.3%
TradeKing	12	1	▴857.7%