Thanks for the Wiki -
Bloomberg News columnist Caroline Baum and hedge fund manager Victor Niederhoffer published a detailed 1995 analysis in National Review that found typical patterns and behaviors in commodities trading not met and that concluded her explanations for her results were highly implausible.[12]
Marshall Magazine, a publication of the Marshall School of Business, sought to frame the trading, the nature of the results, and possible explanations for them:
These results are quite remarkable. Two-thirds of her trades showed a profit by the end of the day she made them and 80 percent were ultimately profitable. Many of her trades took place at or near the best prices of the day.
Only four explanations can account for these remarkable results. Blair may have been an exceptionally good trader. Hillary Clinton may have been exceptionally lucky. Blair may have been front-running other orders. Or Blair may have arranged to have a broker fraudulently assign trades to benefit Clinton's account.[13]
The last possibility refers to situations were a broker sets up a long straddle, then assigns the winning position to a favored client and either assumes the losing position himself or assigns it to unknowing clients of the same firm.[13]