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 | |
|---|---|---|---|---|---|---|
2151
Monster Beverage
MNST
$91.4B
| $2.12M | ﹤0.01% |
42,369
+37,584
| +785% | +$1.99M |
|
2152
iShares Russell 1000 Growth ETF
IWF
$122B
| $2.12M | ﹤0.01% |
23,216
+11,744
| +102% | +$1M |
|
2153
PUT
Ambarella
AMBA
$2.99B
| $2.11M | ﹤0.01% |
39,100
-12,400
| -24% | -$616K |
|
2154
CALL
Root
ROOT
$917M
| $2.1M | ﹤0.01% |
40,800
-400
| -1% | -$23.1K |
|
2155
CALL
First Horizon
FHN
$12.1B
| $2.1M | ﹤0.01% |
133,400
-7,900
| -6% | -$120K |
|
2156
PUT
Bloom Energy
BE
$52.6B
| $2.1M | ﹤0.01% |
171,300
-135,600
| -44% | -$1.73M |
|
|
SNV
2157
PUT
DELISTED
Synovus
SNV
| $2.09M | ﹤0.01% |
52,100
-37,500
| -42% | -$1.42M |
|
2158
PUT
Galicia Financial Group
GGAL
$7.92B
| $2.09M | ﹤0.01% |
68,400
-37,300
| -35% | -$1.2M |
|
2159
CALL
FIGS
FIGS
$1.59B
| $2.09M | ﹤0.01% |
391,800
+275,500
| +237% | +$1.41M |
|
2160
CALL
Carpenter Technology
CRS
$30B
| $2.08M | ﹤0.01% |
19,000
+9,700
| +104% | +$932K |
|
2161
CALL
Brown-Forman Class B
BF.B
$12B
| $2.08M | ﹤0.01% |
48,200
+40,600
| +534% | +$1.91M |
|
2162
iShares Core S&P Small-Cap ETF
IJR
$109B
| $2.08M | ﹤0.01% |
19,507
+16,085
| +470% | +$1.72M |
|
2163
AMC Entertainment Holdings
AMC
$2.03B
| $2.08M | ﹤0.01% |
+417,642
| New | +$1.68M |
|
2164
Celestica
CLS
$35.1B
| $2.08M | ﹤0.01% |
36,262
+22,398
| +162% | +$1.13M |
|
|
VSTO
2165
CALL
DELISTED
Vista Outdoor Inc.
VSTO
| $2.08M | ﹤0.01% |
55,200
-26,500
| -32% | -$915K |
|
2166
PUT
Immunovant
IMVT
$8.09B
| $2.08M | ﹤0.01% |
78,700
+34,800
| +79% | +$990K |
|
|
ZIMV
2167
CALL
DELISTED
ZimVie
ZIMV
| $2.08M | ﹤0.01% |
113,700
-17,400
| -13% | -$285K |
|
2168
PUT
Harrow
HROW
$1.43B
| $2.07M | ﹤0.01% |
98,900
+34,700
| +54% | +$519K |
|
2169
CALL
PagSeguro Digital
PAGS
$2.57B
| $2.06M | ﹤0.01% |
176,700
+5,600
| +3% | +$68.8K |
|
2170
PUT
CACI
CACI
$10.8B
| $2.06M | ﹤0.01% |
4,800
+4,700
| +4,700% | +$1.92M |
|
2171
PUT
Recursion Pharmaceuticals
RXRX
$1.57B
| $2.06M | ﹤0.01% |
275,000
+31,800
| +13% | +$277K |
|
2172
CALL
Nasdaq
NDAQ
$51.5B
| $2.06M | ﹤0.01% |
34,200
-30,300
| -47% | -$1.84M |
|
2173
PUT
ARKO Corp
ARKO
$890M
| $2.06M | ﹤0.01% |
328,300
+319,100
| +3,468% | +$1.72M |
|
2174
PUT
Entegris
ENTG
$19.7B
| $2.06M | ﹤0.01% |
15,200
-12,600
| -45% | -$1.66M |
|
2175
BridgeBio Pharma
BBIO
$16.5B
| $2.06M | ﹤0.01% |
+81,232
| New | +$2.22M |
|
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.