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 |
Walmart Inc
WMT
|
+$43.6M |
| 2 |
Apple
AAPL
|
+$40.9M |
| 3 |
VanEck Oil Services ETF
OIH
|
+$37.7M |
| 4 |
Citigroup
C
|
+$34.2M |
| 5 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$32.7M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Amazon
AMZN
|
+$189M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$123M |
| 3 |
NVIDIA
NVDA
|
+$115M |
| 4 |
Tesla
TSLA
|
+$52M |
| 5 |
Meta Platforms (Facebook)
META
|
+$49M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.42% |
| 2 | Consumer Discretionary | 0.2% |
| 3 | Healthcare | 0.17% |
| 4 | Industrials | 0.15% |
| 5 | Communication Services | 0.13% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
576
PUT
DuPont de Nemours
DD
$18.9B
| $20.5M | 0.02% |
227,767
+125,714
| +123% | +$11.5M |
|
577
CALL
Kimberly-Clark
KMB
$36.1B
| $20.5M | 0.02% |
152,600
+51,600
| +51% | +$6.7M |
|
578
CALL
Peabody Energy
BTU
$2.91B
| $20.5M | 0.02% |
799,300
-55,800
| -7% | -$1.48M |
|
579
CALL
Prudential Financial
PRU
$41.3B
| $20.4M | 0.02% |
246,900
+63,200
| +34% | +$6.03M |
|
580
CALL
Vanguard Consumer Discretionary ETF
VCR
$6.07B
| $20.4M | 0.02% |
62,400
+6,100
| +11% | +$1.49M |
|
581
Deere & Co
DE
$164B
| $20.4M | 0.02% |
+49,409
| New | +$20.5M |
|
582
PUT
Cintas
CTAS
$80.6B
| $20.4M | 0.02% |
176,000
+86,400
| +96% | +$9.52M |
|
583
CALL
Delta Air Lines
DAL
$54.9B
| $20.3M | 0.02% |
580,800
-478,100
| -45% | -$17.7M |
|
|
584
PUT
Peabody Energy
BTU
$2.91B
| $20.2M | 0.02% |
788,500
-39,100
| -5% | -$1.04M |
|
585
PUT
Five Below
FIVE
$11.3B
| $20.2M | 0.02% |
97,900
-81,200
| -45% | -$16M |
|
586
CALL
Truist Financial
TFC
$63.2B
| $20.2M | 0.02% |
591,000
+366,400
| +163% | +$16M |
|
|
MPT
587
PUT
Medical Properties Trust
MPT
$2.88B
| $20M | 0.02% |
2,434,400
-375,500
| -13% | -$4.15M |
|
588
CALL
Marathon Digital Holdings
MARA
$4.73B
| $20M | 0.02% |
2,293,300
-193,100
| -8% | -$1.35M |
|
589
PUT
Expedia Group
EXPE
$31.3B
| $20M | 0.02% |
205,800
-10,800
| -5% | -$1.13M |
|
590
PUT
Automatic Data Processing
ADP
$97.2B
| $19.9M | 0.02% |
89,500
-29,600
| -25% | -$6.68M |
|
591
CALL
Riot Platforms
RIOT
$8.84B
| $19.9M | 0.02% |
1,992,200
+919,800
| +86% | +$5.98M |
|
592
CALL
Kinder Morgan
KMI
$72.3B
| $19.8M | 0.02% |
1,187,200
+22,600
| +2% | +$402K |
|
593
PUT
SAP
SAP
$174B
| $19.8M | 0.02% |
156,700
-11,200
| -7% | -$1.31M |
|
594
CALL
Royal Gold
RGLD
$17.1B
| $19.8M | 0.02% |
152,300
-21,900
| -13% | -$2.7M |
|
595
PUT
Vertex Pharmaceuticals
VRTX
$120B
| $19.6M | 0.02% |
62,100
-9,100
| -13% | -$2.73M |
|
596
CALL
Equinor
EQNR
$95B
| $19.6M | 0.02% |
687,700
+300,300
| +78% | +$9.06M |
|
597
PUT
Abbott
ABT
$175B
| $19.5M | 0.02% |
192,700
-284,400
| -60% | -$30M |
|
598
General Dynamics
GD
$101B
| $19.5M | 0.02% |
85,462
+28,789
| +51% | +$6.65M |
|
599
PUT
Steel Dynamics
STLD
$34.4B
| $19.5M | 0.02% |
172,200
-95,300
| -36% | -$11.1M |
|
600
CALL
WIX.com
WIX
$2.04B
| $19.4M | 0.02% |
194,300
+56,700
| +41% | +$4.98M |
|
Similar funds
Simplex Trading's Q1 2023 Portfolio in Review
As of Q1 2023, Simplex Trading held 10,803 positions worth $114B, up 24% from $91.9B the previous quarter. Its ten largest holdings account for 38% of the portfolio.
Simplex Trading deployed $10.1B of net new capital in Q1 2023, opening 1,536 new positions and adding to 3,665 existing holdings. Its largest new stake was Walmart Inc: 918,957 shares worth $45.2M.
By sector, the portfolio is most concentrated in Technology at 0.42% of assets, up from 0.35% a quarter earlier, followed by Consumer Discretionary and Healthcare.
On the sell side, the largest reduction was Meta Platforms (Facebook), an estimated $49M trimmed.
- Simplex Trading's largest Q1 2023 buy was Walmart Inc: 918,957 shares worth $45.2M.
- Simplex Trading added most to Apple in Q1 2023, an estimated $40.9M increase.
- Simplex Trading's biggest Q1 2023 reduction was Meta Platforms (Facebook), cutting an estimated $49M.
- Simplex Trading fully exited Amazon in Q1 2023, selling an estimated $189M.
- Simplex Trading's ten largest holdings make up 38% of its $114B portfolio in Q1 2023.
- Simplex Trading opened 1,536 new positions and closed 1,729 in Q1 2023.
- Simplex Trading's portfolio value rose 24% quarter-over-quarter to $114B.
Based on Simplex Trading's 13F filing for Q1 2023, filed 27 Apr 2023.