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 | |
|---|---|---|---|---|---|---|
5801
CALL
Amalgamated Financial
AMAL
$1.47B
| $65K | ﹤0.01% |
+2,400
| New | +$58.6K |
|
5802
PUT
Atara Biotherapeutics
ATRA
$75.5M
| $65K | ﹤0.01% |
+7,700
| New | +$116K |
|
5803
PUT
Coca-Cola Europacific Partners
CCEP
$48.3B
| $65K | ﹤0.01% |
+900
| New | +$64.8K |
|
5804
CALL
Gladstone Investment Corp
GAIN
$643M
| $65K | ﹤0.01% |
4,700
+1,800
| +62% | +$25.3K |
|
5805
CALL
LifeMD
LFMD
$169M
| $65K | ﹤0.01% |
9,600
-80,000
| -89% | -$732K |
|
|
NGD
5806
CALL
DELISTED
New Gold Inc
NGD
| $65K | ﹤0.01% |
33,800
-8,600
| -20% | -$16.3K |
|
5807
PUT
Odyssey Marine Exploration
OMEX
$34.9M
| $65K | ﹤0.01% |
13,500
-25,700
| -66% | -$110K |
|
5808
Oportun Financial
OPRT
$255M
| $65K | ﹤0.01% |
+22,584
| New | +$68.5K |
|
|
OTLY
5809
PUT
Oatly Group
OTLY
$465M
| $65K | ﹤0.01% |
3,465
+1,555
| +81% | +$33.1K |
|
5810
CALL
Stereotaxis
STXS
$126M
| $65K | ﹤0.01% |
36,000
+30,400
| +543% | +$68.2K |
|
5811
CALL
TriplePoint Venture Growth BDC
TPVG
$184M
| $65K | ﹤0.01% |
8,200
-2,100
| -20% | -$19.2K |
|
5812
PUT
Viemed Healthcare
VMD
$447M
| $65K | ﹤0.01% |
+10,000
| New | +$75.4K |
|
|
VXRT
5813
DELISTED
Vaxart
VXRT
| $65K | ﹤0.01% |
98,276
+52,358
| +114% | +$43.5K |
|
|
HA
5814
CALL
DELISTED
Hawaiian Holdings, Inc.
HA
| $65K | ﹤0.01% |
5,300
-5,400
| -50% | -$70.6K |
|
5815
T-Rex 2X Long Apple Daily Target ETF
AAPX
$9.21M
| $64K | ﹤0.01% |
+2,181
| New | +$52K |
|
5816
PUT
Amneal Pharmaceuticals
AMRX
$5.85B
| $64K | ﹤0.01% |
10,200
+9,000
| +750% | +$57.1K |
|
5817
Cirrus Logic
CRUS
$6.53B
| $64K | ﹤0.01% |
504
-4,652
| -90% | -$488K |
|
5818
PUT
Daktronics
DAKT
$955M
| $64K | ﹤0.01% |
4,600
+3,900
| +557% | +$41.6K |
|
|
KALV
5819
PUT
DELISTED
KalVista Pharmaceuticals
KALV
| $64K | ﹤0.01% |
5,500
-7,100
| -56% | -$82.9K |
|
5820
CALL
KRONOS Worldwide
KRO
$693M
| $64K | ﹤0.01% |
5,100
-5,500
| -52% | -$69.4K |
|
5821
PUT
Meritage Homes
MTH
$4.58B
| $64K | ﹤0.01% |
800
-1,200
| -60% | -$101K |
|
5822
Praxis Precision Medicines
PRAX
$8.58B
| $64K | ﹤0.01% |
1,561
-1,794
| -53% | -$84.8K |
|
5823
RB Global
RBA
$20.4B
| $64K | ﹤0.01% |
+850
| New | +$63.7K |
|
|
RWT
5824
CALL
Redwood Trust
RWT
$574M
| $64K | ﹤0.01% |
10,000
+8,100
| +426% | +$50.3K |
|
|
VMEO
5825
PUT
DELISTED
Vimeo
VMEO
| $64K | ﹤0.01% |
17,200
+8,400
| +95% | +$31.8K |
|
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.