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 |
Apple
AAPL
|
+$179M |
| 2 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$90.1M |
| 3 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$56M |
| 4 |
iShares Silver Trust
SLV
|
+$41.7M |
| 5 |
Advanced Micro Devices
AMD
|
+$39.8M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
State Street Financial Select Sector SPDR ETF
XLF
|
+$42.8M |
| 2 |
Verizon
VZ
|
+$42.5M |
| 3 |
Occidental Petroleum
OXY
|
+$34.7M |
| 4 |
iShares China Large-Cap ETF
FXI
|
+$33M |
| 5 |
Direxion Daily S&P 500 Bull 3x ETF
SPXL
|
+$32.7M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.67% |
| 2 | Consumer Discretionary | 0.37% |
| 3 | Industrials | 0.24% |
| 4 | Healthcare | 0.22% |
| 5 | Financials | 0.19% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
5326
CALL
Sensata Technologies
ST
$6.98B
| $177K | ﹤0.01% |
3,500
+2,200
| +169% | +$125K |
|
|
GATO
5327
CALL
DELISTED
Gatos Silver, Inc.
GATO
| $177K | ﹤0.01% |
41,100
-1,600
| -4% | -$8.81K |
|
5328
PUT
B2Gold
BTG
$5.13B
| $176K | ﹤0.01% |
38,500
+13,900
| +57% | +$55.9K |
|
5329
DHT Holdings
DHT
$2.99B
| $176K | ﹤0.01% |
+30,409
| New | +$167K |
|
5330
CALL
Seres Therapeutics
MCRB
$46.3M
| $176K | ﹤0.01% |
1,240
-395
| -24% | -$60.8K |
|
5331
CALL
Perrigo
PRGO
$1.43B
| $176K | ﹤0.01% |
4,600
-9,400
| -67% | -$358K |
|
5332
PUT
Sylvamo
SLVM
$1.49B
| $176K | ﹤0.01% |
5,300
+3,300
| +165% | +$110K |
|
5333
PUT
Vishay Intertechnology
VSH
$5.18B
| $176K | ﹤0.01% |
9,000
+3,200
| +55% | +$64.5K |
|
5334
CALL
First Bancorp
FBP
$4.4B
| $175K | ﹤0.01% |
13,400
-3,100
| -19% | -$44.2K |
|
5335
CALL
Sabra Healthcare REIT
SBRA
$5.38B
| $175K | ﹤0.01% |
11,800
-14,500
| -55% | -$198K |
|
|
NWECW
5336
PUT
DELISTED
NORTHWESTERN CORPORATION WARANTS
NWECW
| $175K | ﹤0.01% |
2,900
+2,100
| +263% | +$127K |
|
|
ADN
5337
CALL
DELISTED
Advent Technologies
ADN
| $174K | ﹤0.01% |
2,507
-856
| -25% | -$96.9K |
|
5338
CALL
AAR Corp
AIR
$5.56B
| $174K | ﹤0.01% |
3,600
+1,900
| +112% | +$82.2K |
|
|
BRY
5339
CALL
DELISTED
Berry Corp
BRY
| $174K | ﹤0.01% |
16,900
+13,100
| +345% | +$124K |
|
5340
CALL
Cue Biopharma
CUE
$128M
| $174K | ﹤0.01% |
1,193
+1,100
| +1,183% | +$233K |
|
5341
Gilat Satellite Networks
GILT
$830M
| $174K | ﹤0.01% |
19,842
+8,964
| +82% | +$72.4K |
|
5342
PUT
Graphic Packaging
GPK
$3.24B
| $174K | ﹤0.01% |
8,700
-1,400
| -14% | -$27.2K |
|
|
HEES
5343
CALL
DELISTED
H&E Equipment Services
HEES
| $174K | ﹤0.01% |
4,000
+2,300
| +135% | +$96.7K |
|
5344
CALL
Precigen
PGEN
$2.12B
| $174K | ﹤0.01% |
82,600
+45,200
| +121% | +$110K |
|
5345
PUT
Perella Weinberg Partners
PWP
$1.09B
| $174K | ﹤0.01% |
18,500
-9,800
| -35% | -$104K |
|
5346
Champion Homes
SKY
$4.41B
| $174K | ﹤0.01% |
+3,172
| New | +$215K |
|
5347
CALL
Smart Sand
SND
$179M
| $174K | ﹤0.01% |
50,700
+42,800
| +542% | +$113K |
|
5348
CALL
Simpson Manufacturing
SSD
$7.68B
| $174K | ﹤0.01% |
1,600
+900
| +129% | +$107K |
|
|
CPRX
5349
DELISTED
Catalyst Pharmaceutical
CPRX
| $173K | ﹤0.01% |
20,918
+17,227
| +467% | +$122K |
|
5350
California Resources
CRC
$4.53B
| $173K | ﹤0.01% |
+3,890
| New | +$168K |
|
Similar funds
Simplex Trading's Q1 2022 Portfolio in Review
As of Q1 2022, Simplex Trading held 12,038 positions worth $109B, up 10% from $99B the previous quarter. Its ten largest holdings account for 37% of the portfolio.
Simplex Trading deployed $17.5B of net new capital in Q1 2022, opening 1,603 new positions and adding to 4,441 existing holdings. Its largest new stake was iShares 20+ Year Treasury Bond ETF: 652,921 shares worth $86.2M.
By sector, the portfolio is most concentrated in Technology at 0.67% of assets, up from 0.61% a quarter earlier, followed by Consumer Discretionary and Industrials.
On the sell side, the largest reduction was Verizon, an estimated $42.5M trimmed.
- Simplex Trading's largest Q1 2022 buy was iShares 20+ Year Treasury Bond ETF: 652,921 shares worth $86.2M.
- Simplex Trading added most to Apple in Q1 2022, an estimated $179M increase.
- Simplex Trading's biggest Q1 2022 reduction was Verizon, cutting an estimated $42.5M.
- Simplex Trading fully exited State Street Financial Select Sector SPDR ETF in Q1 2022, selling an estimated $42.8M.
- Simplex Trading's ten largest holdings make up 37% of its $109B portfolio in Q1 2022.
- Simplex Trading opened 1,603 new positions and closed 1,637 in Q1 2022.
- Simplex Trading's portfolio value rose 10% quarter-over-quarter to $109B.
Based on Simplex Trading's 13F filing for Q1 2022, filed 2 May 2022.