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 | |
|---|---|---|---|---|---|---|
7926
iShares Self-Driving EV and Tech ETF
IDRV
$137M
| $26K | ﹤0.01% |
570
-3,000
| -84% | -$146K |
|
7927
CALL
El Pollo Loco
LOCO
$471M
| $26K | ﹤0.01% |
2,300
+1,700
| +283% | +$21.9K |
|
7928
PUT
Marcus Corp
MCS
$929M
| $26K | ﹤0.01% |
1,500
-4,000
| -73% | -$70.2K |
|
|
MESO
7929
PUT
Mesoblast
MESO
$2.14B
| $26K | ﹤0.01% |
3,100
-16,400
| -84% | -$140K |
|
7930
Monster Beverage
MNST
$91.4B
| $26K | ﹤0.01% |
+1,332
| New | +$27.9K |
|
7931
PUT
OptimizeRx
OPRX
$165M
| $26K | ﹤0.01% |
700
-6,400
| -90% | -$283K |
|
7932
PUT
Par Pacific Holdings
PARR
$4.12B
| $26K | ﹤0.01% |
2,000
-100
| -5% | -$1.42K |
|
7933
CALL
Piper Sandler
PIPR
$5.54B
| $26K | ﹤0.01% |
800
-1,600
| -67% | -$58.9K |
|
7934
CALL
PharmaCyte Biotech
PMCB
$5.9M
| $26K | ﹤0.01% |
11,600
+3,100
| +36% | +$6.89K |
|
7935
PUT
Pixelworks
PXLW
$45.7M
| $26K | ﹤0.01% |
742
+667
| +889% | +$26.5K |
|
|
LNAI
7936
PUT
Lunai Bioworks
LNAI
$10.2M
| $26K | ﹤0.01% |
+40
| New | +$21.3K |
|
7937
Robert Half
RHI
$4.48B
| $26K | ﹤0.01% |
235
-2,093
| -90% | -$241K |
|
7938
PUT
Rimini Street
RMNI
$470M
| $26K | ﹤0.01% |
4,500
+1,500
| +50% | +$7.88K |
|
7939
PUT
Silicon Motion
SIMO
$8.45B
| $26K | ﹤0.01% |
400
-5,400
| -93% | -$421K |
|
7940
SelectQuote
SLQT
$126M
| $26K | ﹤0.01% |
9,671
-4,781
| -33% | -$23K |
|
7941
CALL
Super Micro Computer
SMCI
$25.3B
| $26K | ﹤0.01% |
7,000
-2,000
| -22% | -$8.28K |
|
7942
CALL
TransAlta
TAC
$3.99B
| $26K | ﹤0.01% |
+2,600
| New | +$26.8K |
|
|
TGNA
7943
PUT
DELISTED
TEGNA Inc
TGNA
| $26K | ﹤0.01% |
1,200
+900
| +300% | +$18.9K |
|
|
TPH
7944
PUT
DELISTED
Tri Pointe Homes
TPH
| $26K | ﹤0.01% |
1,300
+1,000
| +333% | +$23.2K |
|
7945
ReposiTrak
TRAK
$158M
| $26K | ﹤0.01% |
4,983
+4,548
| +1,046% | +$28.9K |
|
7946
CALL
AgEagle Aerial Systems
UAVS
$62.7M
| $26K | ﹤0.01% |
22
+11
| +100% | +$13K |
|
|
UXIN
7947
PUT
Uxin Ltd
UXIN
$260M
| $26K | ﹤0.01% |
262
-450
| -63% | -$51.4K |
|
7948
PUT
Weatherford International
WFRD
$6.6B
| $26K | ﹤0.01% |
800
+700
| +700% | +$21.9K |
|
7949
PUT
Warner Music
WMG
$13.3B
| $26K | ﹤0.01% |
700
+600
| +600% | +$22.7K |
|
|
AIRC
7950
CALL
DELISTED
Apartment Income REIT Corp.
AIRC
| $26K | ﹤0.01% |
500
+300
| +150% | +$15.8K |
|
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 1,602 new positions and adding to 4,440 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 1,602 new positions and closed 1,638 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.