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 | |
|---|---|---|---|---|---|---|
|
TELL
2426
CALL
DELISTED
Tellurian Inc.
TELL
| $1.42M | ﹤0.01% |
459,600
+139,600
| +44% | +$496K |
|
2427
PUT
SkinHealth Systems
SKIN
$94.9M
| $1.41M | ﹤0.01% |
58,500
-53,700
| -48% | -$1.38M |
|
|
OLPX
2428
DELISTED
Olaplex Holdings
OLPX
| $1.41M | ﹤0.01% |
+48,488
| New | +$1.29M |
|
2429
PUT
Nerdy
NRDY
$107M
| $1.41M | ﹤0.01% |
313,600
+290,500
| +1,258% | +$2.08M |
|
|
RFP
2430
DELISTED
Resolute Forest Products Inc.
RFP
| $1.41M | ﹤0.01% |
92,370
+13,164
| +17% | +$166K |
|
|
PING
2431
CALL
DELISTED
Ping Identity Holding Corp.
PING
| $1.41M | ﹤0.01% |
61,600
+29,700
| +93% | +$756K |
|
2432
CALL
Taboola.com
TBLA
$1.32B
| $1.41M | ﹤0.01% |
+181,100
| New | +$1.56M |
|
2433
CALL
Sundial Growers
SNDL
$325M
| $1.41M | ﹤0.01% |
243,420
+89,640
| +58% | +$587K |
|
|
AMRS
2434
DELISTED
Amyris Inc.
AMRS
| $1.4M | ﹤0.01% |
259,367
+143,277
| +123% | +$1.34M |
|
|
AAWW
2435
CALL
DELISTED
Atlas Air Worldwide Holdings, Inc.
AAWW
| $1.4M | ﹤0.01% |
14,900
+7,700
| +107% | +$663K |
|
2436
ARK Autonomous Technology & Robotics ETF
ARKQ
$1.88B
| $1.4M | ﹤0.01% |
18,205
-4,035
| -18% | -$329K |
|
2437
CALL
Southern Copper
SCCO
$141B
| $1.4M | ﹤0.01% |
24,487
-6,472
| -21% | -$361K |
|
2438
PUT
Enbridge
ENB
$124B
| $1.4M | ﹤0.01% |
35,800
-31,400
| -47% | -$1.26M |
|
|
SAFE
2439
CALL
Safehold
SAFE
$1.19B
| $1.4M | ﹤0.01% |
11,135
+2,958
| +36% | +$361K |
|
2440
PUT
Ameren
AEE
$31.5B
| $1.4M | ﹤0.01% |
15,700
+15,500
| +7,750% | +$1.32M |
|
2441
CALL
America Movil
AMX
$78.1B
| $1.4M | ﹤0.01% |
66,200
-2,400
| -3% | -$44.1K |
|
|
VG
2442
PUT
DELISTED
Vonage Holdings Corporation
VG
| $1.4M | ﹤0.01% |
67,200
+53,900
| +405% | +$983K |
|
2443
CALL
Joby Aviation
JOBY
$6.82B
| $1.4M | ﹤0.01% |
+191,300
| New | +$1.59M |
|
|
MOMO
2444
CALL
Hello Group
MOMO
$869M
| $1.4M | ﹤0.01% |
155,500
-34,700
| -18% | -$397K |
|
|
SWCH
2445
PUT
DELISTED
Switch, Inc. Class A Common Stock
SWCH
| $1.39M | ﹤0.01% |
48,600
+20,700
| +74% | +$541K |
|
2446
CALL
Cemex
CX
$17.4B
| $1.39M | ﹤0.01% |
204,800
+48,000
| +31% | +$313K |
|
|
DSKE
2447
CALL
DELISTED
Daseke, Inc. Common Stock
DSKE
| $1.39M | ﹤0.01% |
138,200
+112,000
| +427% | +$1.1M |
|
2448
Papa John's
PZZA
$999M
| $1.39M | ﹤0.01% |
10,389
+395
| +4% | +$50.5K |
|
|
SMAR
2449
CALL
DELISTED
Smartsheet Inc.
SMAR
| $1.39M | ﹤0.01% |
17,900
+9,600
| +116% | +$671K |
|
2450
Rithm Capital
RITM
$5.09B
| $1.38M | ﹤0.01% |
129,255
+126,655
| +4,871% | +$1.41M |
|
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.