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 | |
|---|---|---|---|---|---|---|
251
PUT
BP
BP
$113B
| $59.8M | 0.05% |
2,033,800
+962,000
| +90% | +$29.3M |
|
252
CALL
Devon Energy
DVN
$52.9B
| $59.7M | 0.05% |
1,010,400
+78,200
| +8% | +$4.23M |
|
253
CALL
Abbott
ABT
$187B
| $59.1M | 0.05% |
499,000
+43,200
| +9% | +$5.36M |
|
254
CALL
Rivian
RIVN
$22.8B
| $58.1M | 0.05% |
1,155,900
+602,200
| +109% | +$36.6M |
|
255
PUT
Charter Communications
CHTR
$18.1B
| $58M | 0.05% |
106,300
+33,800
| +47% | +$19.8M |
|
256
PUT
Gilead Sciences
GILD
$187B
| $57.7M | 0.05% |
970,500
-36,200
| -4% | -$2.31M |
|
257
CALL
American Airlines Group
AAL
$8.69B
| $57.2M | 0.05% |
3,134,700
-632,300
| -17% | -$10.7M |
|
258
CALL
Affirm
AFRM
$24.4B
| $57M | 0.05% |
1,231,800
+584,300
| +90% | +$30.6M |
|
259
PUT
Bristol-Myers Squibb
BMY
$136B
| $56.9M | 0.05% |
779,800
-209,100
| -21% | -$14M |
|
260
PUT
Zscaler
ZS
$27.7B
| $56.9M | 0.05% |
235,900
+21,500
| +10% | +$5.28M |
|
261
PUT
Nucor
NUE
$59.2B
| $56.8M | 0.05% |
382,300
+181,700
| +91% | +$22.3M |
|
262
PUT
Blackrock
BLK
$174B
| $56.8M | 0.05% |
74,300
-2,100
| -3% | -$1.64M |
|
|
263
State Street SPDR S&P 500 ETF Trust
SPY
$814B
| $56.8M | 0.05% |
+125,714
| New | +$56M |
|
264
PUT
Marvell Technology
MRVL
$201B
| $56.5M | 0.05% |
787,400
+382,000
| +94% | +$27.5M |
|
265
PUT
United States Oil Fund
USO
$1.61B
| $56.1M | 0.05% |
757,300
-1,006,200
| -57% | -$67.7M |
|
|
266
PUT
Rivian
RIVN
$22.8B
| $55.7M | 0.05% |
1,107,900
+798,300
| +258% | +$48.6M |
|
267
CALL
ASML
ASML
$659B
| $55.6M | 0.05% |
83,200
+19,600
| +31% | +$13.1M |
|
268
PUT
Teladoc Health
TDOC
$1.14B
| $54.9M | 0.05% |
761,600
-140,600
| -16% | -$10.1M |
|
269
CALL
United Parcel Service
UPS
$87B
| $54.6M | 0.05% |
254,500
-37,600
| -13% | -$7.99M |
|
270
PUT
Enphase Energy
ENPH
$4.81B
| $53.7M | 0.05% |
266,300
-28,500
| -10% | -$4.48M |
|
|
271
PUT
Verizon
VZ
$208B
| $53.4M | 0.05% |
1,049,000
-432,000
| -29% | -$22.9M |
|
272
CALL
Roblox
RBLX
$30.9B
| $53.4M | 0.05% |
1,155,500
+592,600
| +105% | +$35.8M |
|
273
CALL
Marathon Petroleum
MPC
$109B
| $53.3M | 0.05% |
623,000
+319,600
| +105% | +$24.3M |
|
|
274
PUT
ASML
ASML
$659B
| $52.8M | 0.05% |
79,000
+20,300
| +35% | +$13.6M |
|
275
PUT
MongoDB
MDB
$29.7B
| $52.6M | 0.05% |
118,500
-41,300
| -26% | -$16.1M |
|
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.