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 | |
|---|---|---|---|---|---|---|
4151
CALL
Pilgrim's Pride
PPC
$7.09B
| $319K | ﹤0.01% |
8,300
-66,000
| -89% | -$2.38M |
|
|
TPC
4152
Tutor Perini Cor
TPC
$4.31B
| $319K | ﹤0.01% |
14,691
+3,292
| +29% | +$60.5K |
|
|
TELL
4153
PUT
DELISTED
Tellurian Inc.
TELL
| $319K | ﹤0.01% |
461,700
-99,100
| -18% | -$54.9K |
|
4154
Celldex Therapeutics
CLDX
$2.79B
| $318K | ﹤0.01% |
8,600
-15,501
| -64% | -$585K |
|
4155
CALL
Mercury Systems
MRCY
$5.97B
| $318K | ﹤0.01% |
11,800
-400
| -3% | -$11.7K |
|
4156
PUT
PRA Group
PRAA
$688M
| $318K | ﹤0.01% |
16,200
+700
| +5% | +$16.1K |
|
4157
PUT
Sanmina
SANM
$9.24B
| $318K | ﹤0.01% |
4,800
-7,700
| -62% | -$492K |
|
4158
CALL
AC Immune
ACIU
$236M
| $317K | ﹤0.01% |
79,500
+73,500
| +1,225% | +$243K |
|
4159
BorgWarner
BWA
$13B
| $317K | ﹤0.01% |
+9,845
| New | +$341K |
|
4160
CALL
Mitsubishi UFJ Financial
MUFG
$253B
| $317K | ﹤0.01% |
29,400
+21,800
| +287% | +$221K |
|
4161
UFP Technologies
UFPT
$2B
| $317K | ﹤0.01% |
1,204
+583
| +94% | +$144K |
|
4162
CALL
Bausch + Lomb
BLCO
$5.92B
| $316K | ﹤0.01% |
21,800
-9,700
| -31% | -$146K |
|
|
CKPT
4163
CALL
DELISTED
Checkpoint Therapeutics
CKPT
| $316K | ﹤0.01% |
147,400
+46,300
| +46% | +$82.4K |
|
|
DEA
4164
CALL
Easterly Government Properties
DEA
$1.17B
| $316K | ﹤0.01% |
10,240
+6,560
| +178% | +$194K |
|
|
EMBJ
4165
Embraer S.A. ADS
EMBJ
$12.3B
| $316K | ﹤0.01% |
12,251
-55,904
| -82% | -$1.51M |
|
4166
CALL
Treace Medical Concepts
TMCI
$260M
| $316K | ﹤0.01% |
47,600
+17,300
| +57% | +$140K |
|
|
KOCG
4167
PUT
DELISTED
FIS Knights of Columbus Global Belief ETF
KOCG
| $315K | ﹤0.01% |
+6,300
| New | +$161K |
|
4168
PUT
Myriad Genetics
MYGN
$502M
| $315K | ﹤0.01% |
12,900
+12,000
| +1,333% | +$263K |
|
4169
Williams-Sonoma
WSM
$27.8B
| $315K | ﹤0.01% |
2,234
-16,780
| -88% | -$2.5M |
|
4170
PUT
AdvanSix
ASIX
$551M
| $314K | ﹤0.01% |
13,700
-8,000
| -37% | -$199K |
|
4171
CALL
MicroSectors FANG+ ETNs due Jan 8 2038
FNGS
$543M
| $314K | ﹤0.01% |
6,400
-82,400
| -93% | -$3.69M |
|
|
NVNO
4172
CALL
enVVeno Medical
NVNO
$6.94M
| $314K | ﹤0.01% |
1,711
-152
| -8% | -$26.5K |
|
|
DRD
4173
PUT
DRDGold
DRD
$1.79B
| $313K | ﹤0.01% |
36,400
-4,500
| -11% | -$38.1K |
|
|
HBI
4174
DELISTED
Hanesbrands
HBI
| $313K | ﹤0.01% |
+63,561
| New | +$312K |
|
4175
Aurinia Pharmaceuticals
AUPH
$1.92B
| $312K | ﹤0.01% |
54,721
-53,807
| -50% | -$283K |
|
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.