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 | |
|---|---|---|---|---|---|---|
4426
CALL
Black Hills Corp
BKH
$5.55B
| $250K | ﹤0.01% |
4,600
+300
| +7% | +$16.4K |
|
|
DESP
4427
CALL
DELISTED
Despegar.com
DESP
| $250K | ﹤0.01% |
18,900
-3,600
| -16% | -$47.4K |
|
4428
PUT
Invesco Equal Weight 0-30 Year Treasury ETF
GOVI
$1.22B
| $250K | ﹤0.01% |
5,800
-2,400
| -29% | -$65.8K |
|
4429
PUT
NewtekOne
NEWT
$426M
| $250K | ﹤0.01% |
19,900
+14,300
| +255% | +$176K |
|
4430
CALL
Brookdale Senior Living
BKD
$3.55B
| $249K | ﹤0.01% |
36,500
-205,900
| -85% | -$1.39M |
|
4431
CALL
Choice Hotels
CHH
$5.26B
| $249K | ﹤0.01% |
2,100
-4,700
| -69% | -$554K |
|
4432
CALL
Griffon
GFF
$4.02B
| $249K | ﹤0.01% |
3,900
+400
| +11% | +$27.1K |
|
4433
PUT
HealthEquity
HQY
$8.71B
| $249K | ﹤0.01% |
2,900
-1,100
| -28% | -$88.9K |
|
4434
CALL
Progress Software
PRGS
$1.75B
| $249K | ﹤0.01% |
4,600
-21,500
| -82% | -$1.09M |
|
4435
Viasat
VSAT
$9.67B
| $249K | ﹤0.01% |
+19,638
| New | +$313K |
|
4436
Westlake Corp
WLK
$9.26B
| $249K | ﹤0.01% |
+1,722
| New | +$264K |
|
|
HDSN
4437
CALL
Hudson Technologies
HDSN
$246M
| $248K | ﹤0.01% |
28,300
+9,300
| +49% | +$90.1K |
|
|
JFIN
4438
PUT
Jiayin Group
JFIN
$115M
| $248K | ﹤0.01% |
40,200
+23,700
| +144% | +$155K |
|
4439
CALL
Omeros
OMER
$845M
| $248K | ﹤0.01% |
61,300
+12,000
| +24% | +$42.9K |
|
4440
Virco
VIRC
$94.8M
| $248K | ﹤0.01% |
+17,824
| New | +$221K |
|
4441
Western Union
WU
$2.53B
| $248K | ﹤0.01% |
20,327
-27,698
| -58% | -$360K |
|
|
TPC
4442
PUT
Tutor Perini Cor
TPC
$4.03B
| $248K | ﹤0.01% |
11,400
+700
| +7% | +$12.9K |
|
4443
PUT
AZZ Inc
AZZ
$4.24B
| $247K | ﹤0.01% |
+3,200
| New | +$250K |
|
4444
PUT
Build-A-Bear
BBW
$445M
| $247K | ﹤0.01% |
9,800
+6,000
| +158% | +$169K |
|
4445
DoubleVerify
DV
$1.77B
| $247K | ﹤0.01% |
+12,702
| New | +$307K |
|
4446
PUT
Fortrea Holdings
FTRE
$1.93B
| $247K | ﹤0.01% |
10,600
+9,600
| +960% | +$298K |
|
|
HDSN
4447
PUT
Hudson Technologies
HDSN
$246M
| $247K | ﹤0.01% |
28,200
-45,900
| -62% | -$445K |
|
|
PRA
4448
DELISTED
ProAssurance
PRA
| $247K | ﹤0.01% |
20,285
+3,398
| +20% | +$46.1K |
|
4449
USA Compression Partners
USAC
$3.69B
| $246K | ﹤0.01% |
10,399
+7,483
| +257% | +$185K |
|
4450
CALL
Brookfield Infrastructure
BIPC
$5.32B
| $245K | ﹤0.01% |
7,300
+5,900
| +421% | +$196K |
|
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.