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 | |
|---|---|---|---|---|---|---|
4801
CALL
Oceaneering
OII
$4.64B
| $172K | ﹤0.01% |
7,300
+600
| +9% | +$13.9K |
|
|
QVCGA
4802
PUT
DELISTED
QVC Group Inc Series A
QVCGA
| $172K | ﹤0.01% |
5,486
-7,086
| -56% | -$295K |
|
|
PWSC
4803
PUT
DELISTED
PowerSchool Holdings, Inc.
PWSC
| $172K | ﹤0.01% |
7,700
+1,000
| +15% | +$20.2K |
|
4804
PUT
Listed Funds Trust Roundhill Magnificent Seven ETF
MAGS
$3.78B
| $171K | ﹤0.01% |
3,800
+3,500
| +1,167% | +$143K |
|
|
NVEI
4805
PUT
DELISTED
Nuvei Corporation Subordinate Voting Shares
NVEI
| $171K | ﹤0.01% |
5,300
-137,400
| -96% | -$4.42M |
|
4806
PUT
Ameriprise Financial
AMP
$47.8B
| $170K | ﹤0.01% |
400
-12,300
| -97% | -$5.25M |
|
4807
Atlas Lithium Corp
ATLX
$75.5M
| $170K | ﹤0.01% |
16,458
-2,664
| -14% | -$38K |
|
4808
Cardlytics
CDLX
$22.2M
| $170K | ﹤0.01% |
2,078
-5,694
| -73% | -$616K |
|
4809
VanEck Digital Transformation ETF
DAPP
$217M
| $170K | ﹤0.01% |
14,226
+3,506
| +33% | +$36.5K |
|
4810
KLX Energy Services
KLXE
$43.1M
| $170K | ﹤0.01% |
34,452
+12,838
| +59% | +$77.2K |
|
4811
CALL
Pricesmart
PSMT
$5.94B
| $170K | ﹤0.01% |
2,100
-300
| -13% | -$24.7K |
|
4812
CALL
Apogee Enterprises
APOG
$833M
| $169K | ﹤0.01% |
2,700
+2,400
| +800% | +$149K |
|
4813
CALL
Arcos Dorados Holdings
ARCO
$1.74B
| $169K | ﹤0.01% |
18,800
+600
| +3% | +$6.17K |
|
4814
PUT
Arcutis Biotherapeutics
ARQT
$3.48B
| $169K | ﹤0.01% |
18,200
-134,800
| -88% | -$1.22M |
|
|
B
4815
PUT
DELISTED
Barnes Group Inc.
B
| $169K | ﹤0.01% |
4,100
+100
| +3% | +$3.78K |
|
4816
PUT
Alpha and Omega Semiconductor
AOSL
$829M
| $168K | ﹤0.01% |
4,500
+3,000
| +200% | +$79.3K |
|
4817
Alphatec Holdings
ATEC
$1.48B
| $168K | ﹤0.01% |
16,115
+15,247
| +1,757% | +$178K |
|
4818
Evercore
EVR
$11.8B
| $168K | ﹤0.01% |
+808
| New | +$157K |
|
4819
PUT
Helix Energy Solutions
HLX
$1.34B
| $168K | ﹤0.01% |
14,100
+3,800
| +37% | +$42.4K |
|
4820
Harmony Biosciences
HRMY
$2.08B
| $168K | ﹤0.01% |
+5,569
| New | +$167K |
|
|
MFA
4821
MFA Financial
MFA
$932M
| $168K | ﹤0.01% |
15,824
+12,694
| +406% | +$137K |
|
4822
PUT
Simpson Manufacturing
SSD
$7.79B
| $168K | ﹤0.01% |
1,000
+700
| +233% | +$123K |
|
4823
CALL
GFL Environmental
GFL
$14.5B
| $167K | ﹤0.01% |
4,300
-7,400
| -63% | -$253K |
|
4824
Tradr 1.25X NVDA Bear Daily ETF
NVDS
$17.4M
| $167K | ﹤0.01% |
1,396
+1,123
| +411% | +$188K |
|
4825
PUT
Oportun Financial
OPRT
$262M
| $167K | ﹤0.01% |
57,900
+54,500
| +1,603% | +$165K |
|
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.