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 |
State Street Financial Select Sector SPDR ETF
XLF
|
+$42.6M |
| 2 |
Shopify
SHOP
|
+$39.6M |
| 3 |
iShares China Large-Cap ETF
FXI
|
+$35.4M |
| 4 |
Verizon
VZ
|
+$34.1M |
| 5 |
KraneShares CSI China Internet ETF
KWEB
|
+$34.1M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
AMC Entertainment Holdings
AMC
|
+$49.5M |
| 2 |
GE Aerospace
GE
|
+$35.2M |
| 3 |
Carnival Corporation Ltd
CCL
|
+$30.5M |
| 4 |
Advanced Micro Devices
AMD
|
+$28.8M |
| 5 |
Micron Technology
MU
|
+$23.7M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.61% |
| 2 | Consumer Discretionary | 0.43% |
| 3 | Healthcare | 0.35% |
| 4 | Communication Services | 0.23% |
| 5 | Financials | 0.21% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
76
PUT
Airbnb
ABNB
$85.5B
| $191M | 0.19% |
1,145,300
+230,600
| +25% | +$40.6M |
|
77
CALL
Goldman Sachs
GS
$320B
| $187M | 0.19% |
489,800
+174,000
| +55% | +$68.9M |
|
78
CALL
Bank of America
BAC
$430B
| $185M | 0.19% |
4,156,000
+1,362,100
| +49% | +$62.1M |
|
79
CALL
Cisco
CSCO
$442B
| $183M | 0.18% |
2,888,500
+1,404,900
| +95% | +$80.3M |
|
80
CALL
iShares Silver Trust
SLV
$28.4B
| $182M | 0.18% |
8,453,100
-4,692,600
| -36% | -$101M |
|
81
PUT
Nike
NKE
$63.7B
| $173M | 0.17% |
1,035,900
+429,500
| +71% | +$70.8M |
|
82
PUT
Ford
F
$56.9B
| $171M | 0.17% |
8,232,900
+4,340,200
| +111% | +$79.9M |
|
83
CALL
Merck
MRK
$312B
| $170M | 0.17% |
2,753,900
+1,458,900
| +113% | +$116M |
|
84
CALL
AT&T
T
$155B
| $170M | 0.17% |
9,144,736
+4,733,565
| +107% | +$88.5M |
|
85
CALL
Uber
UBER
$146B
| $165M | 0.17% |
3,934,900
+2,040,500
| +108% | +$88M |
|
86
CALL
Coinbase
COIN
$46.3B
| $164M | 0.17% |
648,300
+117,200
| +22% | +$34.1M |
|
|
XYZ
87
CALL
Block Inc
XYZ
$47.8B
| $163M | 0.16% |
1,009,800
+7,600
| +0.8% | +$1.65M |
|
88
PUT
Target
TGT
$62.9B
| $163M | 0.16% |
703,400
+162,600
| +30% | +$39.5M |
|
89
PUT
Costco
COST
$412B
| $161M | 0.16% |
283,300
+3,200
| +1% | +$1.64M |
|
90
PUT
Intuit
INTU
$79.3B
| $160M | 0.16% |
249,300
+209,200
| +522% | +$129M |
|
|
91
PUT
Coinbase
COIN
$46.3B
| $159M | 0.16% |
630,100
+61,100
| +11% | +$17.8M |
|
92
PUT
Applied Materials
AMAT
$448B
| $156M | 0.16% |
993,000
+120,200
| +14% | +$17.4M |
|
93
PUT
Procter & Gamble
PG
$345B
| $154M | 0.16% |
942,300
+313,800
| +50% | +$46.6M |
|
94
CALL
Mercado Libre
MELI
$92.4B
| $154M | 0.16% |
114,000
+91,100
| +398% | +$128M |
|
|
UWC
95
CALL
DELISTED
PROSHARES TR ULTRA RUSSELL3000
UWC
| $154M | 0.16% |
1,088,300
-476,300
| -30% | -$67.2M |
|
96
PUT
UnitedHealth
UNH
$396B
| $154M | 0.16% |
305,700
+140,400
| +85% | +$63.6M |
|
97
CALL
Adobe
ADBE
$90.3B
| $153M | 0.15% |
269,400
+24,900
| +10% | +$15.6M |
|
98
CALL
Qualcomm
QCOM
$183B
| $152M | 0.15% |
832,200
-255,300
| -23% | -$40.9M |
|
99
PUT
Morgan Stanley
MS
$340B
| $151M | 0.15% |
1,542,000
+798,776
| +107% | +$79.6M |
|
100
PUT
Mastercard
MA
$476B
| $151M | 0.15% |
421,000
-45,600
| -10% | -$15.8M |
|
Similar funds
Simplex Trading's Q4 2021 Portfolio in Review
As of Q4 2021, Simplex Trading held 12,077 positions worth $99B, down 7.5% from $107B the previous quarter. Its ten largest holdings account for 33% of the portfolio.
Simplex Trading withdrew a net $10.8B in Q4 2021, closing 1,645 positions and reducing 4,258 holdings. Its most notable exit was Carnival Corporation Ltd, an estimated $30.5M position sold in full.
By sector, the portfolio is most concentrated in Technology at 0.61% of assets, up from 0.49% a quarter earlier, followed by Consumer Discretionary and Healthcare.
Against the trend, Simplex Trading opened a new position in iShares China Large-Cap ETF worth $33M.
- Simplex Trading's largest Q4 2021 buy was iShares China Large-Cap ETF: 902,666 shares worth $33M.
- Simplex Trading added most to State Street Financial Select Sector SPDR ETF in Q4 2021, an estimated $42.6M increase.
- Simplex Trading's biggest Q4 2021 reduction was AMC Entertainment Holdings, cutting an estimated $49.5M.
- Simplex Trading fully exited Carnival Corporation Ltd in Q4 2021, selling an estimated $30.5M.
- Simplex Trading's ten largest holdings make up 33% of its $99B portfolio in Q4 2021.
- Simplex Trading opened 2,269 new positions and closed 1,645 in Q4 2021.
- Simplex Trading's portfolio value fell 7.5% quarter-over-quarter to $99B.
Based on Simplex Trading's 13F filing for Q4 2021, filed 4 Feb 2022.