Barrett Business Services accounts for about 1.2% of Willner & Heller LLC’s portfolio, making the stock its 17th biggest position. GAMMA Investing LLC raised its position in shares of Barrett Business Services by 5,807.9% in the 1st quarter. Barrett Business Services Company Profile(Free Report)Barrett Business Services, Inc provides business management solutions for small and mid-sized companies in the United States. Visit HoldingsChannel.com to get the latest 13F filings and insider trades for Barrett Business Services, Inc. (NASDAQ:BBSI – Free Report). Receive News & Ratings for Barrett Business Services Daily - Enter your email address below to receive a concise daily summary of the latest news and analysts' ratings for Barrett Business Services and related companies with MarketBeat.com's FREE daily email newsletter.