Renaissance Technologies
EFOI icon

Renaissance Technologies’s Energy Focus EFOI Stock Holding History

Renaissance Technologies’s Portfolio EFOI Stock Details EFOI Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$110K Buy
33,398
+23,098
+224% +$80.1K ﹤0.01% 2968
2026
Q1 		$19.8K Sell
10,300
-1,200
-10% -$2.41K ﹤0.01% 3169
2025
Q4 		$26.6K Buy
+11,500
New +$28.4K ﹤0.01% 3127
2023
Q1 		– Sell
-3,171
Closed -$7K – 4069
2022
Q4 		$7K Sell
3,171
-10,720
-77% -$29.4K ﹤0.01% 4050
2022
Q3 		$51K Sell
13,891
-14,168
-50% -$76.9K ﹤0.01% 3749
2022
Q2 		$255K Buy
+28,059
New +$259K ﹤0.01% 3537
2020
Q4 		– Sell
-13,129
Closed -$631K – 3452
2020
Q3 		$631K Buy
13,129
+4,789
+57% +$233K ﹤0.01% 2738
2020
Q2 		$404K Buy
+8,340
New +$213K ﹤0.01% 2934
2020
Q1 		– Sell
-2,325
Closed -$39K – 3517
2019
Q4 		$39K Sell
2,325
-285
-11% -$4.4K ﹤0.01% 3411
2019
Q3 		$43K Sell
2,610
-598
-19% -$9.72K ﹤0.01% 3339
2019
Q2 		$46K Buy
3,208
+1,478
+85% +$28.6K ﹤0.01% 3461
2019
Q1 		$74K Buy
1,730
+693
+67% +$24.6K ﹤0.01% 3333
2018
Q4 		$22K Buy
1,037
+520
+101% +$22.5K ﹤0.01% 3320
2018
Q3 		$37K Buy
+517
New +$39.2K ﹤0.01% 3295
2016
Q1 		– Sell
-1,211
Closed -$583K – 3407
2015
Q4 		$583K Buy
1,211
+368
+44% +$188K ﹤0.01% 2684
2015
Q3 		$348K Buy
+843
New +$422K ﹤0.01% 2724

Other funds holding EFOI

Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
HCA
Heck Capital Advisors Rhinelander, Wisconsin $1.67B AUM 26.33% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Vanguard Fiduciary Trust
Vanguard Fiduciary Trust Malvern, Pennsylvania $454B AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Citadel Advisors
Citadel Advisors Miami, Florida $875B AUM 40.89% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
UBS Group
UBS Group Zurich, Switzerland $786B AUM 40.34% 1-Year Est. Return
TRCT
Tower Research Capital (TRC) New York $4.08B AUM 58.77% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return

Renaissance Technologies's EFOI Position: Q2 2026 in Review

Renaissance Technologies increased its Energy Focus (EFOI) stake by 224% in Q2 2026, buying an estimated $80.1K and bringing the position to 33,398 shares worth $110K. The position accounts for ﹤0.01% of the portfolio, ranked #2968.

Renaissance Technologies first reported a position in EFOI in Q3 2015 and has held it in 16 quarters since. The position peaked at $631K in Q3 2020. 16 funds tracked by Wall St. Rank hold EFOI as of Q2 2026.

  • Renaissance Technologies held 33,398 shares of Energy Focus worth $110K as of Q2 2026.
  • Renaissance Technologies bought 23,098 Energy Focus shares in Q2 2026, an estimated $80.1K.
  • Energy Focus made up ﹤0.01% of Renaissance Technologies's portfolio in Q2 2026, its #2968 holding.
  • Renaissance Technologies first reported a position in Energy Focus in Q3 2015 and has held it in 16 quarters since.
  • Renaissance Technologies's Energy Focus position peaked at $631K in Q3 2020.
  • 16 funds tracked by Wall St. Rank held Energy Focus as of Q2 2026.

Based on Renaissance Technologies's 13F filing for Q2 2026, filed 13 Aug 2026.