Jim Simons
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Jim Simons’s Pacific Biosciences PACB Stock Holding History

Jim Simons’s Portfolio PACB Stock Details PACB Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$3.29M Sell
2,489,100
-1,361,500
-35% -$2.44M 0.01% 1614
2025
Q4 		$7.2M Buy
+3,850,600
New +$7.4M 0.01% 1089
2023
Q4 		– Sell
-326,622
Closed -$2.73M – 4024
2023
Q3 		$2.73M Buy
+326,622
New +$3.73M ﹤0.01% 1683
2022
Q3 		– Sell
-114,200
Closed -$505K – 4322
2022
Q2 		$505K Sell
114,200
-754,500
-87% -$4.58M ﹤0.01% 3162
2022
Q1 		$7.91M Buy
+868,700
New +$10M 0.01% 1281
2021
Q4 		– Sell
-273,800
Closed -$7M – 4140
2021
Q3 		$7M Sell
273,800
-547,000
-67% -$16.2M 0.01% 1252
2021
Q2 		$28.7M Buy
820,800
+37,300
+5% +$1.08M 0.04% 554
2021
Q1 		$26.1M Buy
+783,500
New +$27.4M 0.03% 633
2018
Q1 		– Sell
-113,900
Closed -$301K – 3518
2017
Q4 		$301K Buy
+113,900
New +$399K ﹤0.01% 3024
2016
Q4 		– Sell
-374,900
Closed -$3.36M – 3395
2016
Q3 		$3.36M Sell
374,900
-29,164
-7% -$244K 0.01% 1870
2016
Q2 		$2.84M Sell
404,064
-784,636
-66% -$7.17M 0.01% 1978
2016
Q1 		$10.1M Sell
1,188,700
-397,700
-25% -$3.91M 0.02% 1130
2015
Q4 		$20.8M Buy
+1,586,400
New +$14.2M 0.05% 526
2015
Q3 		– Sell
-309,500
Closed -$1.78M – 3308
2015
Q2 		$1.78M Buy
309,500
+184,300
+147% +$1.07M ﹤0.01% 2136
2015
Q1 		$731K Sell
125,200
-12,772
-9% -$88.1K ﹤0.01% 2460
2014
Q4 		$1.08M Buy
+137,972
New +$883K ﹤0.01% 2094
2014
Q2 		– Sell
-105,766
Closed -$566K – 2916
2014
Q1 		$566K Buy
+105,766
New +$669K ﹤0.01% 2310
2013
Q4 		– Sell
-280,100
Closed -$1.55M – 2981
2013
Q3 		$1.55M Buy
280,100
+4,100
+1% +$14.2K ﹤0.01% 1799
2013
Q2 		$698K Buy
+276,000
New +$687K ﹤0.01% 2099

Other funds holding PACB

AIM
ARK Investment Management St. Petersburg, Florida $12.9B AUM 64.92% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
SoftBank Group
SoftBank Group Tokyo, Japan $11.4B AUM 27.91% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Sumitomo Mitsui Trust Group
Sumitomo Mitsui Trust Group Minato-Ku, Tokyo, Japan $175B AUM 40.63% 1-Year Est. Return
NAMA
Nikko Asset Management Americas New York $7.07B AUM 50.91% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Millennium Management
Millennium Management New York $240B AUM 35.51% 1-Year Est. Return
D.E. Shaw & Co
D.E. Shaw & Co New York $166B AUM 43.98% 1-Year Est. Return

Jim Simons's PACB Position: Q1 2026 in Review

Jim Simons reduced its Pacific Biosciences (PACB) stake by 35% in Q1 2026, selling an estimated $2.44M and leaving 2,489,100 shares worth $3.29M. The position accounts for 0.01% of the portfolio, ranked #1614.

Jim Simons first reported a position in PACB in Q2 2013 and has held it in 19 quarters since. The position peaked at $28.7M in Q2 2021. 230 funds tracked by Wall St. Rank hold PACB as of Q1 2026.

  • Jim Simons held 2,489,100 shares of Pacific Biosciences worth $3.29M as of Q1 2026.
  • Jim Simons sold 1,361,500 Pacific Biosciences shares in Q1 2026, an estimated $2.44M.
  • Pacific Biosciences made up 0.01% of Jim Simons's portfolio in Q1 2026, its #1614 holding.
  • Jim Simons first reported a position in Pacific Biosciences in Q2 2013 and has held it in 19 quarters since.
  • Jim Simons's Pacific Biosciences position peaked at $28.7M in Q2 2021.
  • 230 funds tracked by Wall St. Rank held Pacific Biosciences as of Q1 2026.

Based on Renaissance Technologies's 13F filing for Q1 2026, filed 14 May 2026.