Olive Tree Ridge | 352 followers on LinkedIn. Olive Tree Ridge is a long time-horizon private equity firm. | Olive Tree Ridge is a long time-horizon private equity firm investing money on behalf of institutions, family offices, and individuals. OTR finds fulfillment, diversity of experience, and earnings through building, buying, and operating sustainably profitable companies which serve as community role models by gratifying customers, making employees happy, and respecting the environment.