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 | |
|---|---|---|---|---|---|---|
4226
CALL
FNB Corp
FNB
$6.81B
| $299K | ﹤0.01% |
21,900
+2,300
| +12% | +$31K |
|
4227
PUT
Kimbell Royalty Partners
KRP
$1.43B
| $299K | ﹤0.01% |
18,300
+4,600
| +34% | +$74.9K |
|
4228
CALL
Castle Biosciences
CSTL
$725M
| $298K | ﹤0.01% |
13,700
+11,200
| +448% | +$250K |
|
4229
CALL
CubeSmart
CUBE
$9.62B
| $298K | ﹤0.01% |
6,600
-14,700
| -69% | -$634K |
|
|
GMS
4230
CALL
DELISTED
GMS Inc
GMS
| $298K | ﹤0.01% |
3,700
-200
| -5% | -$18.5K |
|
4231
PUT
Gates Industrial Corporation Ltd.
GTES
$6.69B
| $298K | ﹤0.01% |
18,900
+17,900
| +1,790% | +$304K |
|
4232
CALL
MacroGenics
MGNX
$245M
| $298K | ﹤0.01% |
70,200
+34,800
| +98% | +$339K |
|
|
TWO
4233
CALL
Two Harbors Investment
TWO
$1.27B
| $298K | ﹤0.01% |
22,600
-29,600
| -57% | -$377K |
|
4234
American Coastal Insurance
ACIC
$526M
| $297K | ﹤0.01% |
28,232
-7,210
| -20% | -$81.1K |
|
4235
CALL
InfraCap MLP ETF
AMZA
$467M
| $297K | ﹤0.01% |
7,500
+4,600
| +159% | +$183K |
|
4236
PUT
BioCryst Pharmaceuticals
BCRX
$2.48B
| $297K | ﹤0.01% |
48,100
-5,600
| -10% | -$30.9K |
|
4237
PUT
Mitsubishi UFJ Financial
MUFG
$253B
| $297K | ﹤0.01% |
27,500
+15,200
| +124% | +$154K |
|
4238
A.O. Smith
AOS
$8.82B
| $296K | ﹤0.01% |
3,623
+3,483
| +2,488% | +$295K |
|
4239
CALL
Carlyle Secured Lending
CGBD
$719M
| $296K | ﹤0.01% |
16,700
+3,100
| +23% | +$53.8K |
|
4240
CALL
Kayne Anderson Energy Infrastructure Fund
KYN
$2.43B
| $296K | ﹤0.01% |
28,700
+9,900
| +53% | +$97.8K |
|
4241
CALL
RBC Bearings
RBC
$18.2B
| $296K | ﹤0.01% |
1,100
-4,300
| -80% | -$1.16M |
|
4242
PUT
Tenable Holdings
TENB
$3.46B
| $296K | ﹤0.01% |
6,800
+500
| +8% | +$22K |
|
4243
PUT
West Pharmaceutical
WST
$23.7B
| $296K | ﹤0.01% |
900
-1,500
| -63% | -$530K |
|
4244
Arbutus Biopharma
ABUS
$871M
| $295K | ﹤0.01% |
95,533
+7,403
| +8% | +$22.2K |
|
4245
PUT
Innoviz Technologies
INVZ
$99.5M
| $295K | ﹤0.01% |
318,700
+39,900
| +14% | +$44.8K |
|
4246
CALL
Old National Bancorp
ONB
$10.3B
| $295K | ﹤0.01% |
17,200
+13,500
| +365% | +$224K |
|
4247
Old Republic International
ORI
$10.8B
| $295K | ﹤0.01% |
+9,577
| New | +$293K |
|
4248
PUT
Wrap Technologies
WRAP
$96.4M
| $295K | ﹤0.01% |
147,800
+142,500
| +2,689% | +$247K |
|
4249
CALL
BBVA Argentina
BBAR
$3.85B
| $294K | ﹤0.01% |
31,800
-14,500
| -31% | -$143K |
|
4250
Invesco DB Agriculture Fund
DBA
$1.24B
| $294K | ﹤0.01% |
12,375
-8,570
| -41% | -$213K |
|
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.