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 | Miscellaneous | 97.72% |
| 2 | Technology | 0.67% |
| 3 | Consumer Discretionary | 0.38% |
| 4 | Industrials | 0.24% |
| 5 | Healthcare | 0.22% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
426
PUT
Analog Devices
ADI
$176B
| $28.3M | 0.03% |
171,400
-68,900
| -29% | -$11.2M |
|
427
Shopify
SHOP
$187B
| $28M | 0.03% |
414,870
+97,280
| +31% | +$7.99M |
|
428
CALL
Energy Transfer Partners
ET
$74B
| $27.8M | 0.03% |
2,488,600
+1,568,500
| +170% | +$15.6M |
|
429
CALL
Vale
VALE
$65B
| $27.7M | 0.03% |
1,383,700
-446,800
| -24% | -$7.74M |
|
430
CALL
Zscaler
ZS
$27.7B
| $27.6M | 0.03% |
114,500
-67,900
| -37% | -$16.7M |
|
431
PUT
Invesco S&P SmallCap Low Volatility ETF
XSLV
$253M
| $27.6M | 0.03% |
866,000
+585,500
| +209% | +$28.7M |
|
432
PUT
EOG Resources
EOG
$76.2B
| $27.4M | 0.03% |
230,000
+80,800
| +54% | +$9M |
|
433
CALL
ZIM Integrated Shipping Services
ZIM
$3.44B
| $27.3M | 0.03% |
375,300
-76,700
| -17% | -$5.31M |
|
434
CALL
Rio Tinto
RIO
$168B
| $27.2M | 0.02% |
365,600
+192,100
| +111% | +$14.6M |
|
435
PUT
Petrobras
PBR
$130B
| $26.8M | 0.02% |
1,808,900
+325,000
| +22% | +$4.36M |
|
436
PUT
Honeywell
HON
$66.4B
| $26.7M | 0.02% |
145,569
-49,761
| -25% | -$9.21M |
|
437
PUT
HP
HPQ
$29.4B
| $26.7M | 0.02% |
735,200
+489,800
| +200% | +$18.1M |
|
438
PUT
Simon Property Group
SPG
$67.8B
| $26.6M | 0.02% |
202,500
-52,000
| -20% | -$7.41M |
|
|
SCIU
439
CALL
DELISTED
Global X Scientific Beta US ETF
SCIU
| $26.6M | 0.02% |
878,100
-12,400
| -1% | -$376K |
|
440
CALL
Novavax
NVAX
$1.69B
| $26.6M | 0.02% |
361,100
+4,000
| +1% | +$357K |
|
441
CALL
T-Mobile US
TMUS
$195B
| $26.6M | 0.02% |
207,100
-12,500
| -6% | -$1.49M |
|
442
PUT
Wayfair
W
$13.6B
| $26.5M | 0.02% |
239,000
+112,700
| +89% | +$15.9M |
|
443
PUT
Carvana
CVNA
$53.7B
| $26.3M | 0.02% |
1,102,500
+222,000
| +25% | +$6.47M |
|
444
PUT
BHP
BHP
$230B
| $26.3M | 0.02% |
381,476
+113,669
| +42% | +$6.91M |
|
445
PUT
Amgen
AMGN
$236B
| $26.3M | 0.02% |
108,700
+14,400
| +15% | +$3.31M |
|
446
PUT
Spotify
SPOT
$112B
| $26.2M | 0.02% |
173,400
+11,700
| +7% | +$2M |
|
447
CALL
Pinduoduo
PDD
$117B
| $26.1M | 0.02% |
649,600
+269,200
| +71% | +$13.8M |
|
|
B
448
Barrick Mining
B
$73.7B
| $26M | 0.02% |
1,061,207
+42,741
| +4% | +$920K |
|
449
PUT
Robinhood
HOOD
$110B
| $25.9M | 0.02% |
1,920,000
+1,329,100
| +225% | +$17.8M |
|
450
PUT
Western Digital
WDC
$169B
| $25.8M | 0.02% |
688,622
+377,982
| +122% | +$15.5M |
|
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's Q1 2022 filing shows 1,600 new, 4,440 increased, 4,085 reduced and 1,638 closed positions. Its largest new stake was iShares 20+ Year Treasury Bond ETF: 652,921 shares worth $86.2M. The largest sale was State Street Financial Select Sector SPDR ETF, an estimated $42.8M.
By sector, the portfolio is most concentrated in Miscellaneous at 98% of assets, up from 97% a quarter earlier, followed by Technology and Consumer Discretionary.
- 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 1,600 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.