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 | |
|---|---|---|---|---|---|---|
51
CALL
ExxonMobil
XOM
$629B
| $220M | 0.19% |
2,003,000
+321,600
| +19% | +$35.6M |
|
52
PUT
Adobe
ADBE
$90.3B
| $218M | 0.19% |
566,900
+150,900
| +36% | +$53.6M |
|
53
PUT
Boeing
BA
$161B
| $213M | 0.19% |
1,001,100
+55,000
| +6% | +$11.4M |
|
54
PUT
lululemon athletica
LULU
$13.2B
| $205M | 0.18% |
561,800
+289,900
| +107% | +$90.9M |
|
55
CALL
Costco
COST
$412B
| $202M | 0.18% |
406,400
-9,900
| -2% | -$4.86M |
|
56
PUT
Nike
NKE
$63.7B
| $201M | 0.18% |
1,642,800
-240,500
| -13% | -$29.6M |
|
57
CALL
Broadcom
AVGO
$1.84T
| $200M | 0.18% |
3,119,000
+497,000
| +19% | +$29.9M |
|
58
PUT
Visa
V
$677B
| $192M | 0.17% |
849,600
+327,500
| +63% | +$72.9M |
|
59
PUT
Walt Disney
DIS
$167B
| $189M | 0.17% |
1,882,800
+259,300
| +16% | +$26.1M |
|
|
60
PUT
Costco
COST
$412B
| $187M | 0.16% |
377,100
+89,200
| +31% | +$43.7M |
|
|
61
PUT
ExxonMobil
XOM
$629B
| $184M | 0.16% |
1,679,100
+2,300
| +0.1% | +$254K |
|
62
CALL
Bank of America
BAC
$430B
| $184M | 0.16% |
6,423,900
+2,443,800
| +61% | +$80.7M |
|
63
PUT
State Street SPDR Portfolio Short Term Treasury ETF
SPTS
$6.07B
| $183M | 0.16% |
1,453,300
+271,100
| +23% | +$7.86M |
|
64
CALL
Johnson & Johnson
JNJ
$603B
| $182M | 0.16% |
1,175,900
+410,700
| +54% | +$66.3M |
|
65
CALL
Intuit
INTU
$79.3B
| $181M | 0.16% |
406,400
+192,700
| +90% | +$79.1M |
|
66
PUT
Chevron
CVX
$381B
| $181M | 0.16% |
1,109,300
+114,800
| +12% | +$19.2M |
|
|
67
PUT
Bank of America
BAC
$430B
| $180M | 0.16% |
6,308,100
+1,793,500
| +40% | +$59.2M |
|
68
CALL
Mastercard
MA
$476B
| $180M | 0.16% |
495,200
+59,200
| +14% | +$21.5M |
|
|
69
CALL
lululemon athletica
LULU
$13.2B
| $178M | 0.16% |
487,500
+325,000
| +200% | +$102M |
|
70
PUT
UnitedHealth
UNH
$396B
| $175M | 0.15% |
371,300
-13,100
| -3% | -$6.32M |
|
|
XYZ
71
PUT
Block Inc
XYZ
$47.8B
| $170M | 0.15% |
2,469,700
+597,200
| +32% | +$44.7M |
|
|
72
PUT
Citigroup
C
$223B
| $167M | 0.15% |
3,567,900
+655,200
| +22% | +$32.2M |
|
73
CALL
Intel
INTC
$530B
| $167M | 0.15% |
5,097,000
-797,500
| -14% | -$22.6M |
|
|
74
CALL
Adobe
ADBE
$90.3B
| $165M | 0.15% |
428,200
-184,900
| -30% | -$65.7M |
|
75
PUT
Coinbase
COIN
$46.3B
| $163M | 0.14% |
2,417,700
+554,100
| +30% | +$33.2M |
|
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.