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 | |
|---|---|---|---|---|---|---|
|
PR
1476
CALL
Permian Resources
PR
$17.9B
| $4.73M | ﹤0.01% |
292,700
-143,700
| -33% | -$2.38M |
|
1477
CALL
Alaska Air
ALK
$5.15B
| $4.72M | ﹤0.01% |
116,900
+8,700
| +8% | +$369K |
|
1478
PUT
Ares Management
ARES
$28.5B
| $4.72M | ﹤0.01% |
35,400
-44,500
| -56% | -$6.08M |
|
1479
CALL
State Street
STT
$50.9B
| $4.71M | ﹤0.01% |
63,600
-20,100
| -24% | -$1.5M |
|
1480
CALL
Plains GP Holdings
PAGP
$5.23B
| $4.7M | ﹤0.01% |
249,700
+133,300
| +115% | +$2.45M |
|
1481
SentinelOne
S
$6.22B
| $4.69M | ﹤0.01% |
222,888
+127,598
| +134% | +$2.62M |
|
1482
PUT
Trex
TREX
$4.51B
| $4.69M | ﹤0.01% |
63,300
+55,000
| +663% | +$4.81M |
|
|
HCP
1483
PUT
DELISTED
HashiCorp, Inc. Class A Common Stock
HCP
| $4.68M | ﹤0.01% |
138,900
-118,000
| -46% | -$3.67M |
|
1484
CALL
Lemonade
LMND
$4.62B
| $4.68M | ﹤0.01% |
283,500
+22,500
| +9% | +$375K |
|
1485
Direxion Daily Technology Bull 3x ETF
TECL
$5.14B
| $4.65M | ﹤0.01% |
+47,767
| New | +$3.86M |
|
1486
CALL
United Therapeutics
UTHR
$26.3B
| $4.65M | ﹤0.01% |
14,600
-14,500
| -50% | -$3.84M |
|
1487
CALL
Grab
GRAB
$13.5B
| $4.65M | ﹤0.01% |
1,309,300
+752,000
| +135% | +$2.64M |
|
1488
CALL
Kohl's
KSS
$2.03B
| $4.65M | ﹤0.01% |
202,200
-32,700
| -14% | -$790K |
|
1489
SLB Ltd
SLB
$78.4B
| $4.65M | ﹤0.01% |
+98,507
| New | +$4.75M |
|
1490
BJs Wholesale Club
BJ
$11.9B
| $4.64M | ﹤0.01% |
+52,882
| New | +$4.28M |
|
1491
PUT
Avantor
AVTR
$7.81B
| $4.62M | ﹤0.01% |
217,700
-8,200
| -4% | -$197K |
|
1492
PUT
Corteva
CTVA
$59.7B
| $4.61M | ﹤0.01% |
85,500
-17,700
| -17% | -$975K |
|
1493
CALL
Regions Financial
RF
$26.3B
| $4.61M | ﹤0.01% |
229,800
+18,700
| +9% | +$363K |
|
1494
International Flavors & Fragrances
IFF
$19.4B
| $4.6M | ﹤0.01% |
48,347
+4,973
| +11% | +$456K |
|
1495
MasTec
MTZ
$26.7B
| $4.59M | ﹤0.01% |
42,945
-5,112
| -11% | -$516K |
|
1496
CALL
Tronox
TROX
$995M
| $4.59M | ﹤0.01% |
292,500
-14,700
| -5% | -$267K |
|
1497
CALL
Gen Digital
GEN
$15.6B
| $4.59M | ﹤0.01% |
183,700
-46,500
| -20% | -$1.06M |
|
1498
PUT
AST SpaceMobile
ASTS
$16.8B
| $4.58M | ﹤0.01% |
394,100
+310,500
| +371% | +$1.62M |
|
|
JWN
1499
CALL
DELISTED
Nordstrom
JWN
| $4.56M | ﹤0.01% |
214,900
-93,700
| -30% | -$1.91M |
|
1500
PUT
Monster Beverage
MNST
$91.4B
| $4.55M | ﹤0.01% |
91,200
+3,800
| +4% | +$201K |
|
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.