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 |
Boeing
BA
|
+$55.8M |
| 2 |
Microsoft
MSFT
|
+$42.2M |
| 3 |
Pinduoduo
PDD
|
+$41.3M |
| 4 |
Apple
AAPL
|
+$32M |
| 5 |
Direxion Daily Semiconductor Bull 3X ETF
SOXL
|
+$28.3M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Broadcom
AVGO
|
+$95.2M |
| 2 |
Citigroup
C
|
+$57.2M |
| 3 |
Pfizer
PFE
|
+$56.4M |
| 4 |
TSMC
TSM
|
+$39.7M |
| 5 |
Starbucks
SBUX
|
+$35.5M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.4% |
| 2 | Consumer Discretionary | 0.29% |
| 3 | Healthcare | 0.15% |
| 4 | Industrials | 0.13% |
| 5 | Financials | 0.13% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
2151
CALL
IQVIA
IQV
$34.7B
| $2.32M | ﹤0.01% |
9,800
+3,300
| +51% | +$779K |
|
2152
PUT
Bausch + Lomb
BLCO
$5.77B
| $2.32M | ﹤0.01% |
120,300
+83,200
| +224% | +$1.38M |
|
2153
Zillow
ZG
$7.02B
| $2.32M | ﹤0.01% |
37,446
+28,985
| +343% | +$1.51M |
|
2154
Viatris
VTRS
$20.1B
| $2.32M | ﹤0.01% |
199,710
+98,570
| +97% | +$1.14M |
|
2155
CALL
Groupon
GRPN
$980M
| $2.32M | ﹤0.01% |
237,000
-3,400
| -1% | -$45.6K |
|
2156
CALL
ImmunityBio
IBRX
$7.44B
| $2.32M | ﹤0.01% |
623,100
+168,800
| +37% | +$781K |
|
2157
W.P. Carey
WPC
$17.1B
| $2.31M | ﹤0.01% |
37,155
+12,290
| +49% | +$729K |
|
2158
PUT
Philips
PHG
$25.4B
| $2.31M | ﹤0.01% |
76,319
+29,511
| +63% | +$784K |
|
2159
PUT
Virtu Financial
VIRT
$5.2B
| $2.31M | ﹤0.01% |
75,800
-11,600
| -13% | -$331K |
|
|
NKLA
2160
PUT
DELISTED
Nikola Corporation Common Stock
NKLA
| $2.31M | ﹤0.01% |
503,900
-471,400
| -48% | -$3.49M |
|
2161
CALL
Tower Semiconductor
TSEM
$26.4B
| $2.31M | ﹤0.01% |
52,100
-149,800
| -74% | -$6.14M |
|
2162
Cleveland-Cliffs
CLF
$6.81B
| $2.3M | ﹤0.01% |
+180,336
| New | +$2.45M |
|
2163
CALL
Vodafone
VOD
$34.9B
| $2.3M | ﹤0.01% |
229,800
+163,800
| +248% | +$1.56M |
|
|
HCP
2164
PUT
DELISTED
HashiCorp, Inc. Class A Common Stock
HCP
| $2.3M | ﹤0.01% |
68,000
-70,900
| -51% | -$2.39M |
|
|
2165
PUT
Tower Semiconductor
TSEM
$26.4B
| $2.3M | ﹤0.01% |
52,000
-97,800
| -65% | -$4.01M |
|
2166
PUT
Pool Corp
POOL
$6.7B
| $2.3M | ﹤0.01% |
6,100
-1,100
| -15% | -$381K |
|
2167
PUT
Hallador Energy
HNRG
$718M
| $2.3M | ﹤0.01% |
243,600
+205,900
| +546% | +$1.46M |
|
|
NVMI
2168
CALL
Nova
NVMI
$13.9B
| $2.29M | ﹤0.01% |
11,000
-1,900
| -15% | -$405K |
|
2169
PUT
LKQ Corp
LKQ
$6.58B
| $2.28M | ﹤0.01% |
57,200
+45,900
| +406% | +$1.89M |
|
2170
CALL
Hilton Worldwide
HLT
$74B
| $2.28M | ﹤0.01% |
9,900
-16,300
| -62% | -$3.53M |
|
|
ZVOL
2171
PUT
Volatility Premium Plus ETF
ZVOL
$12.9M
| $2.27M | ﹤0.01% |
85,300
+31,500
| +59% | +$680K |
|
2172
Nasdaq
NDAQ
$51.5B
| $2.27M | ﹤0.01% |
31,032
-94
| -0.3% | -$6.42K |
|
|
CIVI
2173
PUT
DELISTED
Civitas Resources
CIVI
| $2.26M | ﹤0.01% |
44,700
+1,800
| +4% | +$111K |
|
|
INST
2174
CALL
DELISTED
Instructure Holdings, Inc.
INST
| $2.26M | ﹤0.01% |
95,900
+93,800
| +4,467% | +$2.21M |
|
2175
PUT
Yeti Holdings
YETI
$3.82B
| $2.25M | ﹤0.01% |
54,900
+24,100
| +78% | +$945K |
|
Similar funds
Simplex Trading's Q3 2024 Portfolio in Review
As of Q3 2024, Simplex Trading held 9,964 positions worth $170B, up 5.3% from $162B the previous quarter. Its ten largest holdings account for 50% of the portfolio.
Simplex Trading's Q3 2024 filing shows 1,185 new, 3,232 increased, 3,829 reduced and 1,476 closed positions. Its largest new stake was Boeing: 325,328 shares worth $49.5M. The largest sale was Broadcom, an estimated $95.2M.
By sector, the portfolio is most concentrated in Technology at 0.4% of assets, down from 0.53% a quarter earlier, followed by Consumer Discretionary and Healthcare.
- Simplex Trading's largest Q3 2024 buy was Boeing: 325,328 shares worth $49.5M.
- Simplex Trading added most to Pinduoduo in Q3 2024, an estimated $41.3M increase.
- Simplex Trading's biggest Q3 2024 reduction was Citigroup, cutting an estimated $57.2M.
- Simplex Trading fully exited Broadcom in Q3 2024, selling an estimated $95.2M.
- Simplex Trading's ten largest holdings make up 50% of its $170B portfolio in Q3 2024.
- Simplex Trading opened 1,185 new positions and closed 1,476 in Q3 2024.
- Simplex Trading's portfolio value rose 5.3% quarter-over-quarter to $170B.
Based on Simplex Trading's 13F filing for Q3 2024, filed 8 Nov 2024.