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 | |
|---|---|---|---|---|---|---|
326
PUT
Workday
WDAY
$47.2B
| $42.3M | 0.04% |
176,600
+21,400
| +14% | +$5.1M |
|
327
CALL
NXP Semiconductors
NXPI
$57.5B
| $42.2M | 0.04% |
228,100
+128,700
| +129% | +$25.4M |
|
328
CALL
GE Aerospace
GE
$350B
| $42.2M | 0.04% |
740,108
-610,096
| -45% | -$36.4M |
|
|
ATVI
329
PUT
DELISTED
Activision Blizzard
ATVI
| $42.1M | 0.04% |
525,000
-559,700
| -52% | -$43.6M |
|
330
CALL
ProShares UltraShort Health Care
RXD
$3.06M
| $41.7M | 0.04% |
1,116,100
-51,700
| -4% | -$1.4M |
|
331
PUT
Okta
OKTA
$29.8B
| $41.6M | 0.04% |
275,500
+70,300
| +34% | +$12.6M |
|
332
CALL
Dollar General
DG
$29.4B
| $41.5M | 0.04% |
186,600
+114,200
| +158% | +$24.3M |
|
333
PUT
The Mosaic Company
MOS
$8.22B
| $41.4M | 0.04% |
623,000
+269,500
| +76% | +$13.5M |
|
334
PUT
Dow Inc
DOW
$21.3B
| $41.1M | 0.04% |
644,800
+317,800
| +97% | +$19.2M |
|
335
PUT
Autodesk
ADSK
$45.5B
| $41M | 0.04% |
191,300
+14,400
| +8% | +$3.32M |
|
336
CALL
ConocoPhillips
COP
$161B
| $40.8M | 0.04% |
407,900
+204,600
| +101% | +$18.8M |
|
337
CALL
NextEra Energy
NEE
$174B
| $40.7M | 0.04% |
480,800
+111,700
| +30% | +$8.95M |
|
338
PUT
Unity
U
$18.3B
| $40.6M | 0.04% |
409,300
+164,200
| +67% | +$17M |
|
339
PUT
Beyond Meat
BYND
$203M
| $40.6M | 0.04% |
28,013
-74
| -0.3% | -$122K |
|
340
PUT
CF Industries
CF
$20.2B
| $40.4M | 0.04% |
391,900
+238,500
| +155% | +$19.3M |
|
341
CALL
PepsiCo
PEP
$188B
| $40.3M | 0.04% |
240,500
+17,700
| +8% | +$2.97M |
|
|
342
PUT
Dollar General
DG
$29.4B
| $39.8M | 0.04% |
178,600
+12,000
| +7% | +$2.55M |
|
343
PUT
Kroger
KR
$35.9B
| $39.7M | 0.04% |
692,400
+329,800
| +91% | +$16.4M |
|
344
CALL
American Express
AXP
$220B
| $39.2M | 0.04% |
209,600
-8,900
| -4% | -$1.61M |
|
345
CALL
Pinterest
PINS
$11.6B
| $39.2M | 0.04% |
1,591,600
-46,100
| -3% | -$1.26M |
|
346
PUT
eBay
EBAY
$46B
| $39.2M | 0.04% |
683,900
+363,000
| +113% | +$21.1M |
|
347
CALL
Cloudflare
NET
$99.3B
| $38.7M | 0.04% |
323,300
-6,000
| -2% | -$626K |
|
348
PUT
ProShares Ultra Bloomberg Natural Gas
BOIL
$417M
| $38.6M | 0.04% |
12,820
+6,544
| +104% | +$49.9M |
|
349
CALL
Strategy Inc
MSTR
$56.7B
| $38.6M | 0.04% |
793,000
-1,856,000
| -70% | -$80.3M |
|
350
PUT
Capital One
COF
$135B
| $38.4M | 0.04% |
292,600
+83,000
| +40% | +$12.1M |
|
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.