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 | |
|---|---|---|---|---|---|---|
2626
CALL
BGC Group
BGC
$5.58B
| $1.2M | ﹤0.01% |
257,800
+216,400
| +523% | +$1.08M |
|
2627
Bunge Global
BG
$23.6B
| $1.2M | ﹤0.01% |
12,828
-28,167
| -69% | -$2.51M |
|
2628
Vanguard FTSE Europe ETF
VGK
$30B
| $1.2M | ﹤0.01% |
17,543
-12,416
| -41% | -$840K |
|
|
EMBJ
2629
CALL
Embraer S.A. ADS
EMBJ
$11.6B
| $1.2M | ﹤0.01% |
67,400
-60,800
| -47% | -$983K |
|
2630
PUT
J.M. Smucker
SJM
$12.6B
| $1.2M | ﹤0.01% |
8,800
-3,900
| -31% | -$497K |
|
2631
PUT
Paysafe
PSFE
$407M
| $1.19M | ﹤0.01% |
25,458
+4,033
| +19% | +$270K |
|
|
SII
2632
Sprott
SII
$2.65B
| $1.19M | ﹤0.01% |
26,482
+13,167
| +99% | +$556K |
|
2633
CALL
Alto Ingredients
ALTO
$360M
| $1.19M | ﹤0.01% |
248,200
+83,800
| +51% | +$440K |
|
2634
CALL
Liberty Media Series A
FWONA
$22.3B
| $1.19M | ﹤0.01% |
24,441
+19,010
| +350% | +$982K |
|
2635
PUT
Rithm Capital
RITM
$5.09B
| $1.19M | ﹤0.01% |
111,400
+19,100
| +21% | +$213K |
|
|
ONEM
2636
PUT
DELISTED
1Life Healthcare
ONEM
| $1.19M | ﹤0.01% |
67,900
+58,700
| +638% | +$1.14M |
|
2637
CALL
Coeur Mining
CDE
$15.6B
| $1.19M | ﹤0.01% |
236,200
+84,400
| +56% | +$507K |
|
2638
CALL
nCino
NCNO
$1.81B
| $1.19M | ﹤0.01% |
21,700
-400
| -2% | -$26K |
|
2639
PUT
Hyatt Hotels
H
$17.6B
| $1.19M | ﹤0.01% |
12,400
+7,000
| +130% | +$597K |
|
2640
Direxion Daily Gold Miners Index Bull 2X ETF
NUGT
$863M
| $1.19M | ﹤0.01% |
23,230
-15,087
| -39% | -$753K |
|
2641
BRC Group Holdings
RILY
$277M
| $1.19M | ﹤0.01% |
13,359
-21,666
| -62% | -$1.59M |
|
|
AZPN
2642
DELISTED
ASPEN TECHNOLOGY INC
AZPN
| $1.19M | ﹤0.01% |
+7,805
| New | +$1.19M |
|
2643
PUT
Amneal Pharmaceuticals
AMRX
$5.72B
| $1.19M | ﹤0.01% |
247,400
+242,600
| +5,054% | +$1.21M |
|
2644
CALL
Perion Network
PERI
$367M
| $1.19M | ﹤0.01% |
49,300
+400
| +0.8% | +$9.76K |
|
2645
PUT
Cognyte Software
CGNT
$612M
| $1.18M | ﹤0.01% |
75,600
+71,800
| +1,889% | +$1.45M |
|
2646
QuidelOrtho
QDEL
$1.09B
| $1.18M | ﹤0.01% |
8,778
-2,120
| -19% | -$295K |
|
|
IRNT
2647
CALL
DELISTED
IronNet, Inc.
IRNT
| $1.18M | ﹤0.01% |
+281,700
| New | +$2.63M |
|
2648
CALL
Elastic
ESTC
$6.1B
| $1.18M | ﹤0.01% |
9,600
-48,200
| -83% | -$7.28M |
|
2649
PUT
Cedar Fair
FUN
$1.78B
| $1.18M | ﹤0.01% |
23,600
+2,900
| +14% | +$139K |
|
2650
CALL
United States Copper Index Fund
CPER
$742M
| $1.18M | ﹤0.01% |
43,400
+21,800
| +101% | +$583K |
|
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.