Jane Street
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Jane Street’s ProShares UltraShort Yen YCS Stock Holding History

Jane Street’s Portfolio YCS Stock Details YCS Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q1 		– Sell
-39,800
Closed -$1.86M – 10812
2024
Q4 		$1.86M Buy
39,800
+21,800
+121% +$963K ﹤0.01% 4242
2024
Q3 		$700K Buy
+18,000
New +$745K ﹤0.01% 6596
2017
Q1 		– Sell
-30,800
Closed -$618K – 4775
2016
Q4 		$618K Sell
30,800
-28,000
-48% -$495K ﹤0.01% 2617
2016
Q3 		$891K Sell
58,800
-32,800
-36% -$509K ﹤0.01% 2115
2016
Q2 		$1.46M Sell
91,600
-21,200
-19% -$371K 0.01% 1583
2016
Q1 		$2.16M Sell
112,800
-33,600
-23% -$675K 0.01% 1113
2015
Q4 		$3.22M Sell
146,400
-73,200
-33% -$1.64M 0.02% 726
2015
Q3 		$4.82M Buy
219,600
+164,400
+298% +$3.76M 0.03% 464
2015
Q2 		$1.27M Sell
55,200
-30,400
-36% -$691K 0.01% 1346
2015
Q1 		$1.9M Sell
85,600
-200,400
-70% -$4.41M 0.01% 896
2014
Q4 		$6.38M Buy
286,000
+152,800
+115% +$3.14M 0.05% 276
2014
Q3 		$2.52M Buy
133,200
+111,600
+517% +$1.91M 0.03% 496
2014
Q2 		$350K Sell
21,600
-44,800
-67% -$740K ﹤0.01% 1710
2014
Q1 		$1.12M Sell
66,400
-85,600
-56% -$1.44M 0.01% 880
2013
Q4 		$2.69M Buy
152,000
+16,000
+12% +$259K 0.04% 360
2013
Q3 		$2.12M Sell
136,000
-116,800
-46% -$1.85M 0.03% 547
2013
Q2 		$4.05M Buy
+252,800
New +$4.06M 0.07% 210

Other funds holding YCS

NL
NKCFO LLC Geneva, Illinois $337M AUM 58.12% 1-Year Est. Return
Citadel Advisors
Citadel Advisors Miami, Florida $618B AUM 30.34% 1-Year Est. Return
Susquehanna International Group
Susquehanna International Group Bala Cynwyd, Pennsylvania $893B AUM 36.07% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
Osaic Holdings
Osaic Holdings Scottsdale, Arizona $68.3B AUM 20.5% 1-Year Est. Return

Jane Street's YCS Position: Q1 2026 in Review

Jane Street increased its ProShares UltraShort Yen (YCS) stake by 20% in Q1 2026, buying an estimated $114K and bringing the position to 13,343 shares worth $707K. The position accounts for ﹤0.01% of the portfolio, ranked #7261.

Jane Street first reported a position in YCS in Q2 2013 and has held it in 31 quarters since. The position peaked at $6.25M in Q2 2015. 6 funds tracked by Wall St. Rank hold YCS as of Q1 2026.

  • Jane Street held 13,343 shares of ProShares UltraShort Yen worth $707K as of Q1 2026.
  • Jane Street bought 2,223 ProShares UltraShort Yen shares in Q1 2026, an estimated $114K.
  • ProShares UltraShort Yen made up ﹤0.01% of Jane Street's portfolio in Q1 2026, its #7261 holding.
  • Jane Street first reported a position in ProShares UltraShort Yen in Q2 2013 and has held it in 31 quarters since.
  • Jane Street's ProShares UltraShort Yen position peaked at $6.25M in Q2 2015.
  • 6 funds tracked by Wall St. Rank held ProShares UltraShort Yen as of Q1 2026.

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