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 | |
|---|---|---|---|---|---|---|
|
EB
5351
PUT
DELISTED
Eventbrite
EB
| $102K | ﹤0.01% |
21,100
+16,600
| +369% | +$86.6K |
|
5352
PUT
G-III Apparel Group
GIII
$1.55B
| $102K | ﹤0.01% |
3,800
+2,900
| +322% | +$81.3K |
|
5353
CALL
Gold Royalty Corp
GROY
$621M
| $102K | ﹤0.01% |
72,800
+63,500
| +683% | +$113K |
|
5354
CALL
Porch Group
PRCH
$1.63B
| $102K | ﹤0.01% |
67,600
-78,600
| -54% | -$219K |
|
5355
PUT
Vanguard Total International Stock ETF
VXUS
$155B
| $102K | ﹤0.01% |
1,700
| – | – |
|
5356
PUT
Armstrong World Industries
AWI
$7.37B
| $101K | ﹤0.01% |
900
-1,800
| -67% | -$209K |
|
5357
PUT
Costamare
CMRE
$1.87B
| $101K | ﹤0.01% |
6,200
-106,500
| -94% | -$1.45M |
|
5358
Diodes
DIOD
$3.77B
| $101K | ﹤0.01% |
1,411
+1,253
| +793% | +$89.8K |
|
5359
PUT
Delek Logistics
DKL
$3.14B
| $101K | ﹤0.01% |
2,500
-700
| -22% | -$27.5K |
|
|
ETWO
5360
CALL
DELISTED
E2open Parent Holdings
ETWO
| $101K | ﹤0.01% |
22,700
+100
| +0.4% | +$451 |
|
5361
Installed Building Products
IBP
$6.07B
| $101K | ﹤0.01% |
494
-207
| -30% | -$46.6K |
|
5362
Pampa Energía
PAM
$4.77B
| $101K | ﹤0.01% |
+2,301
| New | +$105K |
|
5363
PUT
Regenxbio
RGNX
$648M
| $101K | ﹤0.01% |
8,700
+2,500
| +40% | +$38.9K |
|
5364
CALL
Champion Homes
SKY
$4.41B
| $101K | ﹤0.01% |
1,500
-600
| -29% | -$44.9K |
|
|
AHRT
5365
PUT
AH Realty Trust
AHRT
$536M
| $100K | ﹤0.01% |
9,100
-2,000
| -18% | -$21.8K |
|
5366
CALL
Clearway Energy Class C
CWEN
$4.94B
| $100K | ﹤0.01% |
4,100
-200
| -5% | -$5.06K |
|
|
DCBO
5367
CALL
Docebo
DCBO
$528M
| $100K | ﹤0.01% |
2,600
-500
| -16% | -$20.5K |
|
5368
PUT
Donaldson
DCI
$10.7B
| $100K | ﹤0.01% |
1,400
-900
| -39% | -$66K |
|
5369
PUT
Encore Capital Group
ECPG
$2.02B
| $100K | ﹤0.01% |
2,400
-3,500
| -59% | -$151K |
|
5370
PUT
Fossil Group
FOSL
$288M
| $100K | ﹤0.01% |
70,100
+68,400
| +4,024% | +$77.7K |
|
|
XRN
5371
PUT
Chiron Real Estate Inc
XRN
$516M
| $100K | ﹤0.01% |
2,220
+1,000
| +82% | +$43.5K |
|
5372
CALL
FerroAtlántica
GSM
$600M
| $100K | ﹤0.01% |
18,800
-29,700
| -61% | -$162K |
|
5373
Direxion Daily MSCI India Bull 2X ETF
INDL
$56.7M
| $100K | ﹤0.01% |
1,427
-1,046
| -42% | -$67.4K |
|
|
MAG
5374
PUT
DELISTED
MAG Silver
MAG
| $100K | ﹤0.01% |
8,600
-2,900
| -25% | -$36.4K |
|
5375
PUT
Tyler Technologies
TYL
$13.2B
| $100K | ﹤0.01% |
200
-500
| -71% | -$230K |
|
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.