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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
TWLO icon
401
CALL
Twilio
TWLO
$28.1B
$27.2M 0.03%
324,300
+99,000
+44% +$11.1M
RIO icon
402
PUT
Rio Tinto
RIO
$149B
$27M 0.03%
442,600
+301,300
+213% +$21.6M
KHC icon
403
CALL
Kraft Heinz
KHC
$30.1B
$26.8M 0.03%
703,100
+335,900
+91% +$13.5M
LRCX icon
404
CALL
Lam Research
LRCX
$400B
$26.8M 0.03%
628,000
+51,000
+9% +$2.43M
CCJ icon
405
CALL
Cameco
CCJ
$38.9B
$26.7M 0.03%
1,268,100
+204,000
+19% +$5.15M
CNC icon
406
PUT
Centene
CNC
$31.5B
$26.4M 0.03%
311,800
+256,500
+464% +$21.3M
PDD icon
407
PUT
Pinduoduo
PDD
$119B
$26.3M 0.03%
425,400
-285,900
-40% -$13.4M
EOG icon
408
PUT
EOG Resources
EOG
$77.5B
$25.8M 0.03%
233,900
+3,900
+2% +$484K
K
409
PUT
DELISTED
Kellanova
K
$25.8M 0.03%
385,530
+206,610
+115% +$13.4M
HSY icon
410
PUT
Hershey
HSY
$34.9B
$25.7M 0.03%
119,600
+71,700
+150% +$15.6M
CLF icon
411
CALL
Cleveland-Cliffs
CLF
$6.25B
$25.6M 0.03%
1,666,800
-1,166,600
-41% -$27.9M
MSTR icon
412
PUT
Strategy Inc
MSTR
$34.2B
$25.5M 0.03%
1,555,000
+889,000
+133% +$25.7M
SPG icon
413
CALL
Simon Property Group
SPG
$73B
$25.5M 0.03%
268,300
-67,200
-20% -$7.7M
TJX icon
414
CALL
TJX Companies
TJX
$170B
$25.3M 0.03%
452,900
+285,900
+171% +$17.3M
BABA icon
415
Alibaba
BABA
$273B
$25.2M 0.03%
221,307
+123,259
+126% +$12.1M
SHNY
416
CALL
DELISTED
Direxion Daily Silver Miners Index Bull 2X Shares
SHNY
$25.1M 0.03%
812,400
+91,900
+13% +$2.84M
VXX icon
417
PUT
iPath Series B S&P 500 VIX Short-Term Futures ETN
VXX
$163M
$25M 0.03%
67,819
-84,050
-55% -$33.2M
XSLV icon
418
PUT
Invesco S&P SmallCap Low Volatility ETF
XSLV
$246M
$25M 0.03%
907,800
+41,800
+5% +$1.92M
NTR icon
419
CALL
Nutrien
NTR
$32.9B
$24.9M 0.03%
312,700
-29,800
-9% -$2.89M
MS icon
420
Morgan Stanley
MS
$338B
$24.9M 0.03%
327,504
+236,567
+260% +$19.4M
EL icon
421
CALL
Estee Lauder
EL
$28.9B
$24.9M 0.03%
97,800
+41,100
+72% +$10.4M
ADI icon
422
CALL
Analog Devices
ADI
$185B
$24.8M 0.03%
170,100
+63,600
+60% +$10M
CI icon
423
PUT
Cigna
CI
$75.7B
$24.8M 0.03%
94,000
-34,700
-27% -$8.94M
VALE icon
424
PUT
Vale
VALE
$63.1B
$24.8M 0.03%
1,692,400
+492,100
+41% +$8.41M
ETSY icon
425
CALL
Etsy
ETSY
$7.68B
$24.7M 0.03%
338,000
+46,200
+16% +$4.22M

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.