Simplex Trading Portfolio holdings
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.
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
NVIDIA
NVDA
|
+$93M |
| 2 |
Citigroup
C
|
+$74.8M |
| 3 |
Pinduoduo
PDD
|
+$50.7M |
| 4 |
Intel
INTC
|
+$47.1M |
| 5 |
Broadcom
AVGO
|
+$46.2M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
State Street Energy Select Sector SPDR ETF
XLE
|
+$94.5M |
| 2 |
Pfizer
PFE
|
+$66.4M |
| 3 |
Boeing
BA
|
+$61.6M |
| 4 |
PayPal
PYPL
|
+$42.2M |
| 5 |
GE Aerospace
GE
|
+$42M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.53% |
| 2 | Consumer Discretionary | 0.29% |
| 3 | Healthcare | 0.21% |
| 4 | Financials | 0.2% |
| 5 | Materials | 0.12% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
1901
PUT
Bumble
BMBL
$367M
| $2.82M | ﹤0.01% |
268,500
-200,300
| -43% | -$2.18M |
|
1902
CALL
iQIYI
IQ
$1.18B
| $2.82M | ﹤0.01% |
768,800
-106,900
| -12% | -$482K |
|
1903
PUT
Oscar Health
OSCR
$8.5B
| $2.82M | ﹤0.01% |
178,100
+94,900
| +114% | +$1.74M |
|
1904
Hilton Worldwide
HLT
$74B
| $2.81M | ﹤0.01% |
12,904
-42,952
| -77% | -$8.82M |
|
1905
CALL
Assured Guaranty
AGO
$3.78B
| $2.81M | ﹤0.01% |
36,400
+9,800
| +37% | +$766K |
|
1906
CALL
Atkore
ATKR
$2.59B
| $2.81M | ﹤0.01% |
20,800
-2,800
| -12% | -$446K |
|
1907
PUT
Sphere Entertainment
SPHR
$4.88B
| $2.8M | ﹤0.01% |
80,000
-205,100
| -72% | -$7.98M |
|
1908
CALL
Asbury Automotive
ABG
$4.19B
| $2.8M | ﹤0.01% |
12,300
+5,300
| +76% | +$1.2M |
|
1909
CALL
Royalty Pharma
RPRX
$26.1B
| $2.8M | ﹤0.01% |
106,200
+51,400
| +94% | +$1.42M |
|
1910
PUT
RingCentral
RNG
$4.05B
| $2.8M | ﹤0.01% |
99,200
+47,400
| +92% | +$1.52M |
|
1911
PUT
Roivant Sciences
ROIV
$25.2B
| $2.79M | ﹤0.01% |
264,500
+101,900
| +63% | +$1.12M |
|
1912
Citizens Financial Group
CFG
$30.4B
| $2.79M | ﹤0.01% |
77,556
-48,368
| -38% | -$1.69M |
|
1913
CALL
WisdomTree US Total Dividend Fund
DTD
$1.65B
| $2.79M | ﹤0.01% |
46,800
+34,300
| +274% | +$2.39M |
|
1914
CALL
Pagaya Technologies
PGY
$1.32B
| $2.79M | ﹤0.01% |
218,700
+34,600
| +19% | +$388K |
|
|
SILV
1915
DELISTED
SilverCrest Metals Inc. Common Shares
SILV
| $2.78M | ﹤0.01% |
+340,878
| New | +$2.78M |
|
1916
Verizon
VZ
$194B
| $2.78M | ﹤0.01% |
67,317
-37,274
| -36% | -$1.5M |
|
1917
PUT
ICICI Bank
IBN
$106B
| $2.77M | ﹤0.01% |
96,200
+56,200
| +141% | +$1.51M |
|
1918
CALL
TechnipFMC
FTI
$30.6B
| $2.77M | ﹤0.01% |
105,800
-105,400
| -50% | -$2.72M |
|
|
CNR
1919
CALL
Core Natural Resources Inc
CNR
$4.19B
| $2.77M | ﹤0.01% |
27,100
-8,100
| -23% | -$736K |
|
|
SMAR
1920
CALL
DELISTED
Smartsheet Inc.
SMAR
| $2.76M | ﹤0.01% |
62,700
-4,400
| -7% | -$175K |
|
|
SQSP
1921
PUT
DELISTED
Squarespace, Inc.
SQSP
| $2.76M | ﹤0.01% |
63,300
+58,500
| +1,219% | +$2.34M |
|
|
SPR
1922
DELISTED
Spirit AeroSystems
SPR
| $2.76M | ﹤0.01% |
83,981
+8,964
| +12% | +$286K |
|
|
IRBT
1923
CALL
DELISTED
iRobot
IRBT
| $2.75M | ﹤0.01% |
302,400
-67,300
| -18% | -$620K |
|
1924
CALL
Iovance Biotherapeutics
IOVA
$2.23B
| $2.75M | ﹤0.01% |
343,300
-557,700
| -62% | -$5.98M |
|
1925
CALL
Matsons
MATX
$6.37B
| $2.75M | ﹤0.01% |
21,000
-3,200
| -13% | -$372K |
|
Similar funds
Simplex Trading's Q2 2024 Portfolio in Review
As of Q2 2024, Simplex Trading held 10,213 positions worth $162B, down 6.5% from $173B the previous quarter. Its ten largest holdings account for 50% of the portfolio.
Simplex Trading withdrew a net $19.2B in Q2 2024, closing 1,431 positions and reducing 4,061 holdings. Its most notable exit was Boeing, an estimated $61.6M position sold in full.
By sector, the portfolio is most concentrated in Technology at 0.53% of assets, up from 0.38% a quarter earlier, followed by Consumer Discretionary and Healthcare.
Against the trend, Simplex Trading opened a new position in Citigroup worth $77M.
- Simplex Trading's largest Q2 2024 buy was Citigroup: 1,213,247 shares worth $77M.
- Simplex Trading added most to NVIDIA in Q2 2024, an estimated $93M increase.
- Simplex Trading's biggest Q2 2024 reduction was State Street Energy Select Sector SPDR ETF, cutting an estimated $94.5M.
- Simplex Trading fully exited Boeing in Q2 2024, selling an estimated $61.6M.
- Simplex Trading's ten largest holdings make up 50% of its $162B portfolio in Q2 2024.
- Simplex Trading opened 1,358 new positions and closed 1,431 in Q2 2024.
- Simplex Trading's portfolio value fell 6.5% quarter-over-quarter to $162B.
Based on Simplex Trading's 13F filing for Q2 2024, filed 25 Jul 2024.