Jane Street
BLCN

Jane Street’s Siren ETF Trust Siren NexGen Economy ETF BLCN Stock Holding History

Jane Street’s Portfolio BLCN Stock Details BLCN Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		– Sell
-23,180
Closed -$555K – 11613
2025
Q4 		$555K Buy
+23,180
New +$615K ﹤0.01% 7442
2025
Q2 		– Sell
-15,550
Closed -$297K – 9646
2025
Q1 		$297K Buy
+15,550
New +$372K ﹤0.01% 7814
2024
Q4 		– Sell
-14,819
Closed -$371K – 9411
2024
Q3 		$371K Buy
14,819
+7,126
+93% +$182K ﹤0.01% 7694
2024
Q2 		$201K Buy
+7,693
New +$201K ﹤0.01% 8380
2024
Q1 		– Sell
-42,472
Closed -$1.04M – 9199
2023
Q4 		$1.04M Sell
42,472
-2,810
-6% -$58K ﹤0.01% 5506
2023
Q3 		$860K Buy
45,282
+2,204
+5% +$47K ﹤0.01% 5421
2023
Q2 		$929K Sell
43,078
-19,382
-31% -$410K ﹤0.01% 5309
2023
Q1 		$1.34M Buy
62,460
+49,402
+378% +$1.07M ﹤0.01% 4482
2022
Q4 		$265K Buy
13,058
+3,554
+37% +$79.3K ﹤0.01% 7232
2022
Q3 		$211K Sell
9,504
-15,558
-62% -$414K ﹤0.01% 8088
2022
Q2 		$636K Buy
+25,062
New +$765K ﹤0.01% 6308
2022
Q1 		– Sell
-190,313
Closed -$8.09M – 10295
2021
Q4 		$8.09M Buy
+190,313
New +$8.92M ﹤0.01% 2155
2021
Q3 		– Sell
-101,430
Closed -$4.82M – 9930
2021
Q2 		$4.82M Buy
+101,430
New +$4.85M ﹤0.01% 2700
2021
Q1 		– Sell
-61,450
Closed -$2.5M – 9083
2020
Q4 		$2.5M Buy
+61,450
New +$2.27M ﹤0.01% 3128
2020
Q2 		– Sell
-50,123
Closed -$1.07M – 7058
2020
Q1 		$1.07M Buy
50,123
+27,284
+119% +$675K ﹤0.01% 2719
2019
Q4 		$584K Sell
22,839
-18,615
-45% -$453K ﹤0.01% 3499
2019
Q3 		$955K Buy
41,454
+8,974
+28% +$209K ﹤0.01% 2681
2019
Q2 		$754K Sell
32,480
-79,862
-71% -$1.83M ﹤0.01% 3057
2019
Q1 		$2.57M Sell
112,342
-25,982
-19% -$564K ﹤0.01% 1757
2018
Q4 		$2.68M Buy
138,324
+13,566
+11% +$287K 0.01% 1426
2018
Q3 		$2.95M Buy
124,758
+46,320
+59% +$1.07M 0.01% 1508
2018
Q2 		$1.76M Buy
+78,438
New +$1.8M ﹤0.01% 2085

Other funds holding BLCN

LPL Financial
LPL Financial San Diego, California $377B AUM 19.32% 1-Year Est. Return
Lido Advisors
Lido Advisors Los Angeles, California $32.7B AUM 19.2% 1-Year Est. Return
Mercer Global Advisors
Mercer Global Advisors Denver, Colorado $67.6B AUM 18.3% 1-Year Est. Return
Susquehanna International Group
Susquehanna International Group Bala Cynwyd, Pennsylvania $893B AUM 36.07% 1-Year Est. Return
GJIA
Glass Jacobson Investment Advisors Owings Mills, Maryland $290M AUM 17.7% 1-Year Est. Return
Commonwealth Equity Services
Commonwealth Equity Services Waltham, Massachusetts $71.6B AUM 21.08% 1-Year Est. Return
Osaic Holdings
Osaic Holdings Scottsdale, Arizona $68.3B AUM 20.5% 1-Year Est. Return
Rockefeller Capital Management
Rockefeller Capital Management New York $56.4B AUM 24.96% 1-Year Est. Return
Carson Wealth (CWM LLC)
Carson Wealth (CWM LLC) Omaha, Nebraska $38.1B AUM 19.66% 1-Year Est. Return
AF
Allworth Financial Folsom, California $24.7B AUM 15.55% 1-Year Est. Return

Jane Street's BLCN Position: Q1 2026 in Review

Jane Street sold out of Siren ETF Trust Siren NexGen Economy ETF (BLCN) in Q1 2026, closing a stake of 23,180 shares — an estimated $555K sold.

Jane Street first reported a position in BLCN in Q2 2018 and held it in 22 quarters. The position peaked at $8.09M in Q4 2021. 33 funds tracked by Wall St. Rank hold BLCN as of Q1 2026.

  • Jane Street reported no remaining Siren ETF Trust Siren NexGen Economy ETF position as of Q1 2026 after selling out during the quarter.
  • Jane Street sold 23,180 Siren ETF Trust Siren NexGen Economy ETF shares in Q1 2026, an estimated $555K.
  • Jane Street first reported a position in Siren ETF Trust Siren NexGen Economy ETF in Q2 2018 and held it in 22 quarters.
  • Jane Street's Siren ETF Trust Siren NexGen Economy ETF position peaked at $8.09M in Q4 2021.
  • 33 funds tracked by Wall St. Rank held Siren ETF Trust Siren NexGen Economy ETF as of Q1 2026.

Based on Jane Street's 13F filing for Q1 2026, filed 12 May 2026.