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Simplex Trading

Simplex Trading Portfolio holdings

AUM $149B
1-Year Est. Return 62.07%
 

Simplex Trading, founded in 2004 and headquartered in Chicago, Illinois, is a technology-driven proprietary trading firm specializing in market-making and liquidity provision, primarily in U.S. equity options and futures options. Leveraging advanced proprietary software and data-driven analysis, the firm optimizes trading strategies and develops innovative solutions to capitalize on financial market opportunities, maintaining a competitive edge through automation and a collaborative team of technologists and traders. With a workforce exceeding 300 and led by CEO Erik Swanson since 2014, Simplex operates with a low-ego, high-intelligence culture, focusing on minimal bureaucracy and rapid execution, while also making strategic venture capital investments in fintech startups. Recognized as a top workplace in Chicago by Built In’s 2025 awards, Simplex continues to evolve, blending cutting-edge technology with a commitment to market efficiency and growth.

This Fund
S&P 500
This Quarter Est. Return
-17.92%
1 Year Est. Return
+62.07%
3 Year Est. Return
+116.86%
5 Year Est. Return
+116.02%
10 Year Est. Return
+774.44%
AUM
$94.1B
AUM Growth
-$15.3B
Cap. Flow
+$11.3B
Cap. Flow %
12.02%
Top 10 Hldgs %
40.12%
Holding
11,810
New
1,405
Increased
4,027
Reduced
4,289
Closed
1,792

Sector Composition

Rank Sector Weight
1 Technology 0.84%
2 Communication Services 0.32%
3 Consumer Discretionary 0.32%
4 Financials 0.28%
5 Healthcare 0.2%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake
Capital Flow
VRSN icon
2576
PUT
VeriSign
VRSN
$24.8B
$1.04M ﹤0.01%
6,200
+6,100
+6,100% +$1.12M
ARNC
2577
CALL
DELISTED
Arconic Corporation
ARNC
$1.04M ﹤0.01%
37,000
-165,800
-82% -$4.48M
SRAD icon
2578
CALL
Sportradar
SRAD
$4.34B
$1.03M ﹤0.01%
131,100
+98,900
+307% +$1.08M
BTWN
2579
CALL
DELISTED
Bridgetown Holdings Limited Class A Ordinary Shares
BTWN
$1.03M ﹤0.01%
104,300
-249,100
-70% -$2.46M
GGAL icon
2580
CALL
Galicia Financial Group
GGAL
$8.03B
$1.03M ﹤0.01%
149,600
+14,400
+11% +$129K
PR
2581
PUT
Permian Resources
PR
$17B
$1.03M ﹤0.01%
172,900
-20,700
-11% -$165K
MO icon
2582
Altria Group
MO
$122B
$1.03M ﹤0.01%
+24,713
New +$1.28M
UUUU icon
2583
CALL
Energy Fuels
UUUU
$2.93B
$1.03M ﹤0.01%
210,000
+62,900
+43% +$445K
AVB icon
2584
CALL
AvalonBay Communities
AVB
$26.8B
$1.03M ﹤0.01%
5,300
-20,700
-80% -$4.48M
WB icon
2585
CALL
Weibo
WB
$1.92B
$1.03M ﹤0.01%
44,500
-27,400
-38% -$614K
NNN icon
2586
CALL
NNN REIT
NNN
$9.36B
$1.03M ﹤0.01%
23,900
+13,100
+121% +$576K
FNKO icon
2587
CALL
Funko
FNKO
$342M
$1.03M ﹤0.01%
46,000
-9,500
-17% -$184K
AYX
2588
CALL
DELISTED
Alteryx Inc
AYX
$1.03M ﹤0.01%
21,200
+400
+2% +$23.9K
FRO icon
2589
CALL
Frontline
FRO
$8.59B
$1.02M ﹤0.01%
115,700
+47,900
+71% +$434K
TME icon
2590
Tencent Music
TME
$15.3B
$1.02M ﹤0.01%
204,268
-257,081
-56% -$1.13M
ZS icon
2591
Zscaler
ZS
$23.8B
$1.02M ﹤0.01%
6,857
-20,171
-75% -$3.57M
LITE icon
2592
PUT
Lumentum
LITE
$55.4B
$1.02M ﹤0.01%
12,900
-15,700
-55% -$1.34M
GOLD
2593
CALL
Gold.com Inc
GOLD
$1.19B
$1.02M ﹤0.01%
31,700
+14,500
+84% +$521K
ERF
2594
CALL
DELISTED
Enerplus Corporation
ERF
$1.02M ﹤0.01%
77,200
+4,800
+7% +$66.1K
ALC icon
2595
PUT
Alcon
ALC
$32.8B
$1.02M ﹤0.01%
14,600
-1,800
-11% -$131K
DTD icon
2596
CALL
WisdomTree US Total Dividend Fund
DTD
$1.65B
$1.02M ﹤0.01%
30,400
+22,900
+305% +$1.41M
TBCH
2597
Turtle Beach Corp
TBCH
$245M
$1.02M ﹤0.01%
83,403
+7,394
+10% +$126K
FND icon
2598
PUT
Floor & Decor
FND
$5.99B
$1.02M ﹤0.01%
16,200
-2,700
-14% -$203K
HTZ icon
2599
PUT
Hertz
HTZ
$632M
$1.02M ﹤0.01%
152,100
-44,800
-23% -$884K
WRK
2600
CALL
DELISTED
WestRock Company
WRK
$1.01M ﹤0.01%
25,500
-23,700
-48% -$1.11M

Similar funds

Simplex Trading's Q2 2022 Portfolio in Review

As of Q2 2022, Simplex Trading held 11,810 positions worth $94.1B, down 14% from $109B the previous quarter. Its ten largest holdings account for 40% of the portfolio.

Simplex Trading deployed $11.3B of net new capital in Q2 2022, opening 1,405 new positions and adding to 4,027 existing holdings. Its largest new stake was Alphabet (Google) Class C: 543,540 shares worth $59.4M.

By sector, the portfolio is most concentrated in Technology at 0.84% of assets, up from 0.67% a quarter earlier, followed by Communication Services and Consumer Discretionary.

On the sell side, the largest reduction was United Airlines, an estimated $22.7M trimmed.

  • Simplex Trading's largest Q2 2022 buy was Alphabet (Google) Class C: 543,540 shares worth $59.4M.
  • Simplex Trading added most to Apple in Q2 2022, an estimated $286M increase.
  • Simplex Trading's biggest Q2 2022 reduction was United Airlines, cutting an estimated $22.7M.
  • Simplex Trading fully exited State Street SPDR S&P 500 ETF Trust in Q2 2022, selling an estimated $51.5M.
  • Simplex Trading's ten largest holdings make up 40% of its $94.1B portfolio in Q2 2022.
  • Simplex Trading opened 1,405 new positions and closed 1,792 in Q2 2022.
  • Simplex Trading's portfolio value fell 14% quarter-over-quarter to $94.1B.

Based on Simplex Trading's 13F filing for Q2 2022, filed 3 Aug 2022.