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 | |
|---|---|---|---|---|---|---|
7176
Federal Signal
FSS
$7.19B
| $14K | ﹤0.01% |
+176
| New | +$15K |
|
7177
PUT
Harvard Bioscience
HBIO
$26.7M
| $14K | ﹤0.01% |
500
| – | – |
|
7178
CALL
Haleon
HLN
$45.2B
| $14K | ﹤0.01% |
1,800
-4,200
| -70% | -$35.1K |
|
|
HOOK
7179
CALL
DELISTED
HOOKIPA Pharma
HOOK
| $14K | ﹤0.01% |
2,440
-440
| -15% | -$3.49K |
|
7180
Hawkins
HWKN
$2.99B
| $14K | ﹤0.01% |
+156
| New | +$12.8K |
|
7181
IPG Photonics
IPGP
$3.57B
| $14K | ﹤0.01% |
168
-662
| -80% | -$57.2K |
|
|
KALV
7182
DELISTED
KalVista Pharmaceuticals
KALV
| $14K | ﹤0.01% |
1,215
-2,211
| -65% | -$25.8K |
|
7183
PUT
Kodiak Sciences
KOD
$2.52B
| $14K | ﹤0.01% |
6,000
+1,500
| +33% | +$5.08K |
|
7184
Loop Industries
LOOP
$35.6M
| $14K | ﹤0.01% |
7,055
+6,903
| +4,541% | +$18.3K |
|
|
CYPH
7185
CALL
Cypherpunk Technologies Inc
CYPH
$65.4M
| $14K | ﹤0.01% |
7,400
+6,800
| +1,133% | +$17.8K |
|
7186
Lantern Pharma
LTRN
$33.2M
| $14K | ﹤0.01% |
3,200
+272
| +9% | +$1.64K |
|
7187
CALL
Lightwave Logic
LWLG
$887M
| $14K | ﹤0.01% |
4,800
+900
| +23% | +$3.29K |
|
7188
PUT
Mama's Creations
MAMA
$830M
| $14K | ﹤0.01% |
2,100
+200
| +11% | +$1.22K |
|
|
ORIO
7189
PUT
Orion Digital Corp
ORIO
$15.6M
| $14K | ﹤0.01% |
10,000
+300
| +3% | +$517 |
|
7190
Direxion Daily MSFT Bull 2X ETF
MSFU
$825M
| $14K | ﹤0.01% |
291
-259
| -47% | -$11.7K |
|
7191
Myomo
MYO
$36.9M
| $14K | ﹤0.01% |
4,597
+3,061
| +199% | +$10.4K |
|
7192
CALL
Natural Gas Services Group
NGS
$460M
| $14K | ﹤0.01% |
700
+600
| +600% | +$13.2K |
|
|
NREF
7193
NexPoint Real Estate Finance
NREF
$323M
| $14K | ﹤0.01% |
1,060
+1,017
| +2,365% | +$13.7K |
|
|
ORLA
7194
Orla Mining
ORLA
$3.42B
| $14K | ﹤0.01% |
3,836
-41,861
| -92% | -$168K |
|
7195
Pacer Lunt Large Cap Multi-Factor Alternator ETF
PALC
$209M
| $14K | ﹤0.01% |
294
-11
| -4% | -$511 |
|
|
PDS
7196
CALL
Precision Drilling
PDS
$1.01B
| $14K | ﹤0.01% |
200
-3,600
| -95% | -$253K |
|
|
PINC
7197
DELISTED
Premier
PINC
| $14K | ﹤0.01% |
802
-36,054
| -98% | -$715K |
|
7198
PUT
Planet Labs
PL
$7.28B
| $14K | ﹤0.01% |
8,000
+900
| +13% | +$1.73K |
|
7199
Perdoceo Education
PRDO
$2.06B
| $14K | ﹤0.01% |
+700
| New | +$14.5K |
|
|
7200
PUT
Perdoceo Education
PRDO
$2.06B
| $14K | ﹤0.01% |
700
+500
| +250% | +$10.4K |
|
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.