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 | |
|---|---|---|---|---|---|---|
5526
PUT
Ryder
R
$9.83B
| $86K | ﹤0.01% |
700
-1,700
| -71% | -$205K |
|
5527
PUT
Cambria Tail Risk ETF
TAIL
$147M
| $86K | ﹤0.01% |
+2,200
| New | +$26K |
|
|
NPKI
5528
NPK International
NPKI
$1.06B
| $86K | ﹤0.01% |
10,399
-7,395
| -42% | -$56.9K |
|
5529
CALL
Autoliv
ALV
$9.02B
| $85K | ﹤0.01% |
800
-15,400
| -95% | -$1.83M |
|
5530
Ardagh Metal Packaging
AMBP
$2.83B
| $85K | ﹤0.01% |
+25,117
| New | +$94.5K |
|
5531
CALL
Bioventus
BVS
$892M
| $85K | ﹤0.01% |
14,900
-6,500
| -30% | -$35.7K |
|
|
CEPU
5532
CALL
Central Puerto
CEPU
$2.29B
| $85K | ﹤0.01% |
9,400
+8,700
| +1,243% | +$85.5K |
|
5533
CALL
Donaldson
DCI
$10.9B
| $85K | ﹤0.01% |
1,200
-6,000
| -83% | -$440K |
|
|
FPI
5534
PUT
Farmland Partners
FPI
$408M
| $85K | ﹤0.01% |
7,400
-19,500
| -72% | -$215K |
|
5535
Neogen
NEOG
$2.62B
| $85K | ﹤0.01% |
+5,484
| New | +$76.2K |
|
|
ORGN
5536
CALL
DELISTED
Origin Materials
ORGN
| $85K | ﹤0.01% |
3,177
+440
| +16% | +$11.8K |
|
|
REVG
5537
DELISTED
REV Group
REVG
| $85K | ﹤0.01% |
+3,449
| New | +$84.7K |
|
5538
CALL
Stellus Capital Investment Corp
SCM
$217M
| $85K | ﹤0.01% |
6,200
+4,300
| +226% | +$59.4K |
|
5539
Adaptive Biotechnologies
ADPT
$3.59B
| $84K | ﹤0.01% |
23,293
-4,873
| -17% | -$15.5K |
|
5540
CALL
Bitdeer Technologies
BTDR
$2.56B
| $84K | ﹤0.01% |
8,200
-8,300
| -50% | -$56.9K |
|
|
VISN
5541
Vistance Networks Inc
VISN
$2.65B
| $84K | ﹤0.01% |
68,581
-99,331
| -59% | -$118K |
|
5542
CALL
CorMedix
CRMD
$591M
| $84K | ﹤0.01% |
19,500
-12,700
| -39% | -$64.5K |
|
5543
PUT
Gran Tierra Energy
GTE
$265M
| $84K | ﹤0.01% |
8,700
+1,600
| +23% | +$14.3K |
|
5544
LSB Industries
LXU
$783M
| $84K | ﹤0.01% |
10,296
-21,217
| -67% | -$185K |
|
5545
PUT
Microvision
MVIS
$93.2M
| $84K | ﹤0.01% |
80,000
+62,300
| +352% | +$82K |
|
|
OLPX
5546
DELISTED
Olaplex Holdings
OLPX
| $84K | ﹤0.01% |
54,759
-89,601
| -62% | -$143K |
|
5547
Patria Investments
PAX
$1.75B
| $84K | ﹤0.01% |
7,022
+6,356
| +954% | +$83.7K |
|
5548
Paysign
PAYS
$501M
| $84K | ﹤0.01% |
19,645
+12,623
| +180% | +$55.7K |
|
5549
PennantPark Floating Rate Capital
PFLT
$689M
| $84K | ﹤0.01% |
7,335
-7,929
| -52% | -$90K |
|
5550
CALL
Riskified
RSKD
$694M
| $84K | ﹤0.01% |
13,200
+600
| +5% | +$3.39K |
|
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.