The world’s largest marijuana exchange-traded fund (ETF) has added nine new stocks to its portfolio of cannabis assets.

The Horizons Marijuana Life Sciences ETF (HMMJ) alters its holdings four times a year in order to help it achieve its goal of replicating the performance of the North American Marijuana Index. In a press release, the fund confirmed that it recently added the following nine stocks: Aleafia Health Inc. (ALEF), Choom Holdings Inc. (CHOO) , Eve & Co. Inc. (EVE), GTEC Holdings Ltd. (GTEC), FSD Pharma Inc. (HUGE), James E. Wagner Cultivation Corp. (JWCA), Namaste Technologies Inc. (N), INDIVA Ltd. (NVDA) and Tilray Inc. (TLRY) to its portfolio.

New Constituents:

Source: Horizons ETFs Management (Canada) Inc.

As part of the fund’s quarterly rebalancing, HMMJ also removed Heritage Cannabis Holdings Corp. (CANN), Creso Pharma Ltd. (ASX) and The Hydroponics Company Ltd. (THC) from its portfolio because they “no longer qualify for index inclusion.” In total, the fund now holds 49 different stocks, 13 fewer than the 62 included in the North American Marijuana Index.

HMMJ’s biggest and most high profile addition was TIlray. Over 7% of the fund is now invested in the Nanaimo-based medical marijuana supplier.

Bloomberg reported that HMMJ had previously come under pressure for not holding the volatile stock, which experienced a 200-point price swing last week and reached a high of $300 on Sept. 19. Tilray’s shares were trading at $114.5 at the end of Wednesday, 574% ahead of its $17 IPO price. The ETF did not reveal when it bought the stock and how much it paid for it. (See also: Tilray Shares Halted 5 Times In Wild Trading Day.)

Tilray is now HMMJ’s fifth biggest holding, at 7.96% of the portfolio. According to the funds' website, its biggest positions are in established marijuana producers Aurora Cannabis Inc. (ACB), Canopy Growth Corp. (CGC) and Aphria Inc. (APH) and British drug firm GW Pharmaceuticals PLC. (GWPH). Those four stocks make up 12.45%, 11.98%, 10.2% and 8.38%, respectively, of HMMJ’s total weightings.

In the press release, it was confirmed that no single stock can exceed 10% of the weight of the index at the rebalancing date.

HMMJ made history earlier this month for becoming the first cannabis-focused ETF to break the billion-dollar in assets mark. Data from its website shows that it has comfortably outperformed the North American Medical Marijuana Index in the past one, three and six months and over the past year. (See also: A Marijuana ETF Just Crossed $1B in Assets.)