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 | |
|---|---|---|---|---|---|---|
276
PUT
Proshares UltraShort Technology
REW
$3M
| $52.5M | 0.05% |
211,838
+116,275
| +122% | +$15.1M |
|
277
CALL
Alcoa
AA
$13.2B
| $52.2M | 0.05% |
580,300
+119,600
| +26% | +$8.69M |
|
278
CALL
SLB Ltd
SLB
$85.3B
| $52.2M | 0.05% |
1,263,600
+585,100
| +86% | +$22.9M |
|
279
PUT
lululemon athletica
LULU
$11.1B
| $52M | 0.05% |
142,300
+75,600
| +113% | +$24.6M |
|
280
CALL
Delta Air Lines
DAL
$52.7B
| $51.8M | 0.05% |
1,309,900
+214,100
| +20% | +$8.34M |
|
281
CALL
NIO
NIO
$9.52B
| $51.7M | 0.05% |
2,454,600
-118,700
| -5% | -$2.8M |
|
282
PUT
Las Vegas Sands
LVS
$28.7B
| $51.6M | 0.05% |
1,328,500
+557,900
| +72% | +$23.1M |
|
283
PUT
Lucid Motors
LCID
$1.84B
| $51.3M | 0.05% |
202,010
+49,980
| +33% | +$14.9M |
|
|
284
CALL
Las Vegas Sands
LVS
$28.7B
| $51.2M | 0.05% |
1,317,000
+555,600
| +73% | +$23M |
|
285
PUT
Trade Desk
TTD
$6.78B
| $50.7M | 0.05% |
731,500
+10,000
| +1% | +$722K |
|
286
CALL
Sea Limited
SE
$68.7B
| $50.6M | 0.05% |
422,000
+108,400
| +35% | +$15.3M |
|
287
PUT
Take-Two Interactive
TTWO
$40.1B
| $50.5M | 0.05% |
328,500
+174,400
| +113% | +$27.9M |
|
288
PUT
Thermo Fisher Scientific
TMO
$227B
| $50.3M | 0.05% |
85,100
-54,000
| -39% | -$31M |
|
289
CALL
Comcast
CMCSA
$94B
| $50M | 0.05% |
1,068,600
+169,700
| +19% | +$8.17M |
|
290
CALL
RTX Corp
RTX
$271B
| $49.9M | 0.05% |
504,000
+323,900
| +180% | +$30.7M |
|
291
CALL
Expedia Group
EXPE
$35.8B
| $49.6M | 0.05% |
253,700
-147,700
| -37% | -$27.6M |
|
292
CALL
CF Industries
CF
$20.2B
| $49M | 0.04% |
475,800
+273,500
| +135% | +$22.1M |
|
|
293
PUT
Expedia Group
EXPE
$35.8B
| $48.9M | 0.04% |
250,100
-83,300
| -25% | -$15.6M |
|
294
CALL
Enphase Energy
ENPH
$4.81B
| $48.5M | 0.04% |
240,600
+77,800
| +48% | +$12.2M |
|
295
PUT
Cloudflare
NET
$99.3B
| $48M | 0.04% |
401,100
-78,800
| -16% | -$8.22M |
|
|
ATVI
296
CALL
DELISTED
Activision Blizzard
ATVI
| $48M | 0.04% |
599,100
-1,207,200
| -67% | -$94M |
|
297
CALL
Altria Group
MO
$115B
| $48M | 0.04% |
918,400
+200,800
| +28% | +$10.2M |
|
298
PUT
T-Mobile US
TMUS
$195B
| $47.7M | 0.04% |
371,800
-31,300
| -8% | -$3.73M |
|
299
PUT
3M
MMM
$86.9B
| $47.5M | 0.04% |
381,644
+179,400
| +89% | +$23.9M |
|
300
PUT
Intuit
INTU
$91B
| $47M | 0.04% |
97,700
-151,600
| -61% | -$77.6M |
|
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.