Grass-roots organization Fix the Court said Thursday that the U.S. Supreme Court justices’ annual financial disclosure reports contain a number of potential conflicts of interest. The financial disclosures, released to the public seven weeks after they were due, were provided in paper form only. Fix the Court has also called on the justices put the reports online, a move that would enable faster and easier review by journalists and the public.

The disclosures reveal that “in 2014 three justices – Chief Justice John Roberts and Associate Justices Stephen Breyer and Samuel Alito – maintained positions in publicly traded companies worth hundreds of thousands of dollars, with many of these companies appearing before the high court either as litigants or as filers of amicus curiae, or ‘friend of the court,’ briefs.”

Justice Roberts owned up to $750,000 in shares of Time Warner US:TWX and its subsidiaries when the cable giant filed a pro-broadcasters brief in ABC v. Aereo last year, according to Fix the Court. ABC won the case 6-3 last June with Roberts in the majority. Justice Breyer owned up to $100,000 in IT services firm EMC Corp. US:EMC and Roberts held up to $50,000 in Hewlett-Packard HPQ, -3.21% last year as both businesses filed briefs in favor of Teva Pharmaceuticals TEVA, -5.59% , which won its patent case against generic drug-maker Sandoz, 7-2, with Breyer and Roberts in the majority.

Last month, in a first-of-its-kind report Fix the Court found that between 2009 and 2014, Roberts, Breyer and Alito decisions supported companies whose stocks they own nearly 70% of the time those companies filed an amicus brief.

Gabe Roth, executive director of Fix the Court said, “It’s impossible to say whether justices’ stock ownership played a factor in their decisions, but we shouldn’t have to ask that question. Instead, those who own shares in individual companies should take reasonable steps, like creating blind trusts, to avoid the appearance of impropriety.”