Eventide Asset Management, Llc Buys GTT Communications Inc, Varonis Systems Inc, Arista Networks Inc, Sells The Trade Desk Inc, ACADIA Pharmaceuticals Inc, Twilio Inc

• New Purchases: ANET, ROP, ARGX, QURE, RCKT, MNTA, ECYT, SLDB, MDGL, RARX,
• Added Positions: GTT, VRNS, HUBS, SPLK, MIC, AIMT, SAGE, VRTX, FIVN, LII,
• Reduced Positions: TTD, ACAD, TWLO, XLRN, STLD, LOXO, FPRX, AKCA, ALNY, PRTA,
• Sold Out: PTGX, TCON, BABY, TTPH, ACHN, PBYI, BCRX, CDTX, CMTA,

For the details of EVENTIDE ASSET MANAGEMENT, LLC's stock buys and sells, go to http://www.gurufocus.com/StockBuy.php?GuruName=EVENTIDE+ASSET+MANAGEMENT%2C+LLC

1. Ascendis Pharma A/S (ASND) - 1,332,540 shares, 4.08% of the total portfolio.
2. XPO Logistics Inc (XPO) - 788,000 shares, 3.76% of the total portfolio.
3. Collegium Pharmaceutical Inc (COLL) - 2,207,610 shares, 2.64% of the total portfolio.
4. AveXis Inc (AVXS) - 421,000 shares, 2.44% of the total portfolio.
5. Aimmune Therapeutics Inc (AIMT) - 1,564,983 shares, 2.33% of the total portfolio. Shares added by 27.65%

Eventide Asset Management, Llc initiated holding in Arista Networks Inc. The purchase prices were between $231.03 and $307.96, with an estimated average price of $269.68. The stock is now traded at around $247.47. The impact to a portfolio due to this purchase was 0.79%. The holding were 66,000 shares as of 2018-03-31.

Eventide Asset Management, Llc initiated holding in Roper Technologies Inc. The purchase prices were between $259.4 and $289.86, with an estimated average price of $275.93. The stock is now traded at around $275.25. The impact to a portfolio due to this purchase was 0.78%. The holding were 59,000 shares as of 2018-03-31.

Eventide Asset Management, Llc initiated holding in argenx SE. The purchase prices were between $56.95 and $85.19, with an estimated average price of $75.53. The stock is now traded at around $94.49. The impact to a portfolio due to this purchase was 0.38%. The holding were 100,000 shares as of 2018-03-31.

Eventide Asset Management, Llc initiated holding in uniQure NV. The purchase prices were between $17.1 and $26.61, with an estimated average price of $21.81. The stock is now traded at around $30.83. The impact to a portfolio due to this purchase was 0.37%. The holding were 335,000 shares as of 2018-03-31.

Eventide Asset Management, Llc initiated holding in Rocket Pharmaceuticals Inc. The purchase prices were between $10.44 and $19.19, with an estimated average price of $16.21. The stock is now traded at around $19.93. The impact to a portfolio due to this purchase was 0.35%. The holding were 394,585 shares as of 2018-03-31.

Eventide Asset Management, Llc initiated holding in Momenta Pharmaceuticals Inc. The purchase prices were between $13.9 and $18.8, with an estimated average price of $16.67. The stock is now traded at around $22.95. The impact to a portfolio due to this purchase was 0.34%. The holding were 400,000 shares as of 2018-03-31.

Eventide Asset Management, Llc added to a holding in GTT Communications Inc by 943.89%. The purchase prices were between $42.2 and $61.85, with an estimated average price of $49.33. The stock is now traded at around $51.00. The impact to a portfolio due to this purchase was 1.06%. The holding were 441,000 shares as of 2018-03-31.

Eventide Asset Management, Llc added to a holding in Varonis Systems Inc by 185.12%. The purchase prices were between $49 and $62.95, with an estimated average price of $55.55. The stock is now traded at around $72.75. The impact to a portfolio due to this purchase was 0.88%. The holding were 479,000 shares as of 2018-03-31.

Eventide Asset Management, Llc added to a holding in HubSpot Inc by 68.27%. The purchase prices were between $89.15 and $120.5, with an estimated average price of $104.22. The stock is now traded at around $110.35. The impact to a portfolio due to this purchase was 0.72%. The holding were 350,000 shares as of 2018-03-31.

Eventide Asset Management, Llc added to a holding in Splunk Inc by 36.86%. The purchase prices were between $85.94 and $110.01, with an estimated average price of $95.46. The stock is now traded at around $114.86. The impact to a portfolio due to this purchase was 0.56%. The holding were 453,000 shares as of 2018-03-31.

Eventide Asset Management, Llc added to a holding in Macquarie Infrastructure Corp by 40.01%. The purchase prices were between $36.56 and $67.4, with an estimated average price of $53.86. The stock is now traded at around $37.26. The impact to a portfolio due to this purchase was 0.51%. The holding were 1,032,000 shares as of 2018-03-31.

Eventide Asset Management, Llc added to a holding in Aimmune Therapeutics Inc by 27.65%. The purchase prices were between $30.07 and $39.43, with an estimated average price of $35.33. The stock is now traded at around $30.01. The impact to a portfolio due to this purchase was 0.5%. The holding were 1,564,983 shares as of 2018-03-31.

Eventide Asset Management, Llc sold out a holding in Protagonist Therapeutics Inc. The sale prices were between $8.46 and $23.08, with an estimated average price of $18.86.

Eventide Asset Management, Llc sold out a holding in TRACON Pharmaceuticals Inc. The sale prices were between $2.1 and $3.5, with an estimated average price of $2.73.

Eventide Asset Management, Llc sold out a holding in Natus Medical Inc. The sale prices were between $28.15 and $38, with an estimated average price of $31.65.

Eventide Asset Management, Llc sold out a holding in Tetraphase Pharmaceuticals Inc. The sale prices were between $2.08 and $6.76, with an estimated average price of $4.39.

Eventide Asset Management, Llc sold out a holding in Achillion Pharmaceuticals Inc. The sale prices were between $2.65 and $4.23, with an estimated average price of $3.27.

Eventide Asset Management, Llc sold out a holding in Puma Biotechnology Inc. The sale prices were between $59.7 and $99.25, with an estimated average price of $74.88.

Eventide Asset Management, Llc reduced to a holding in The Trade Desk Inc by 47.75%. The sale prices were between $42.8 and $59.94, with an estimated average price of $51.06. The stock is now traded at around $80.44. The impact to a portfolio due to this sale was -0.78%. Eventide Asset Management, Llc still held 360,000 shares as of 2018-03-31.

Eventide Asset Management, Llc reduced to a holding in ACADIA Pharmaceuticals Inc by 66.06%. The sale prices were between $22.47 and $32.33, with an estimated average price of $27.69. The stock is now traded at around $18.13. The impact to a portfolio due to this sale was -0.35%. Eventide Asset Management, Llc still held 113,600 shares as of 2018-03-31.

Eventide Asset Management, Llc reduced to a holding in Twilio Inc by 43.13%. The sale prices were between $23.91 and $42.06, with an estimated average price of $31.67. The stock is now traded at around $53.73. The impact to a portfolio due to this sale was -0.31%. Eventide Asset Management, Llc still held 327,000 shares as of 2018-03-31.

Eventide Asset Management, Llc reduced to a holding in Five Prime Therapeutics Inc by 66.67%. The sale prices were between $16.02 and $22.49, with an estimated average price of $19.51. The stock is now traded at around $18.90. The impact to a portfolio due to this sale was -0.24%. Eventide Asset Management, Llc still held 105,000 shares as of 2018-03-31.

Eventide Asset Management, Llc reduced to a holding in Akcea Therapeutics Inc by 58.33%. The sale prices were between $15.57 and $32.8, with an estimated average price of $21.39. The stock is now traded at around $22.93. The impact to a portfolio due to this sale was -0.22%. Eventide Asset Management, Llc still held 175,000 shares as of 2018-03-31.

Eventide Asset Management, Llc reduced to a holding in Alnylam Pharmaceuticals Inc by 31.11%. The sale prices were between $115.92 and $148.54, with an estimated average price of $128.92. The stock is now traded at around $101.64. The impact to a portfolio due to this sale was -0.19%. Eventide Asset Management, Llc still held 62,000 shares as of 2018-03-31.