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 |
Amazon
AMZN
|
+$83.1M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
+$37.2M |
| 3 |
Amgen
AMGN
|
+$30.5M |
| 4 |
Micron Technology
MU
|
+$28.8M |
| 5 |
Qualcomm
QCOM
|
+$18.2M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$29.5M |
| 2 |
Goldman Sachs
GS
|
+$27.8M |
| 3 |
Gilead Sciences
GILD
|
+$27.6M |
| 4 |
Booking.com
BKNG
|
+$25.4M |
| 5 |
AT&T
T
|
+$19.6M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 13.55% |
| 2 | Communication Services | 11.57% |
| 3 | Consumer Discretionary | 9.69% |
| 4 | Healthcare | 7.28% |
| 5 | Financials | 4.17% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
KANG
426
DELISTED
iKang Healthcare Group, Inc.
KANG
| $849K | 0.04% |
69,254
+34,953
| +102% | +$507K |
|
|
CY
427
DELISTED
Cypress Semiconductor
CY
| $847K | 0.04% |
62,090
+33,722
| +119% | +$459K |
|
428
PUT
Bank of America
BAC
$432B
| $844K | 0.04% |
8,208
-8,918
| -52% | -$208K |
|
|
ALXN
429
DELISTED
Alexion Pharmaceuticals
ALXN
| $844K | 0.04% |
6,937
-10,991
| -61% | -$1.28M |
|
430
Terex
TEX
$7.66B
| $837K | 0.04% |
22,342
+10,232
| +84% | +$346K |
|
431
PUT
American International
AIG
$41.5B
| $833K | 0.04% |
2,315
+501
| +28% | +$31.1K |
|
432
iShares Silver Trust
SLV
$28.8B
| $833K | 0.04% |
+53,055
| New | +$864K |
|
433
Tenet Healthcare
THC
$16.8B
| $833K | 0.04% |
43,122
-8,226
| -16% | -$143K |
|
434
LendingTree
TREE
$578M
| $833K | 0.04% |
4,843
+3,767
| +350% | +$567K |
|
|
COHR
435
DELISTED
Coherent Inc
COHR
| $832K | 0.04% |
+3,700
| New | +$850K |
|
436
Hyatt Hotels
H
$17.6B
| $828K | 0.04% |
+14,742
| New | +$835K |
|
|
HES
437
PUT
DELISTED
Hess
HES
| $828K | 0.04% |
2,352
+701
| +42% | +$32.8K |
|
438
Fluor
FLR
$7.21B
| $826K | 0.04% |
+18,046
| New | +$864K |
|
439
CALL
Hain Celestial
HAIN
$51.4M
| $819K | 0.04% |
2,370
+829
| +54% | +$29.9K |
|
|
PXD
440
PUT
DELISTED
Pioneer Natural Resource Co.
PXD
| $818K | 0.04% |
923
+125
| +16% | +$21.4K |
|
441
Cadence Design Systems
CDNS
$93B
| $817K | 0.04% |
+24,416
| New | +$812K |
|
442
PUT
Palo Alto Networks
PANW
$273B
| $817K | 0.04% |
14,094
+216
| +2% | +$4.36K |
|
443
Sherwin-Williams
SHW
$78.9B
| $815K | 0.04% |
6,975
+444
| +7% | +$49.6K |
|
444
CALL
CarMax
KMX
$8.15B
| $813K | 0.04% |
1,886
+1,165
| +162% | +$70.4K |
|
|
SHNY
445
CALL
DELISTED
Direxion Daily Silver Miners Index Bull 2X Shares
SHNY
| $809K | 0.04% |
+8,009
| New | +$94.5K |
|
|
TIME
446
DELISTED
Time Inc.
TIME
| $809K | 0.04% |
56,407
+33,028
| +141% | +$493K |
|
447
Heron Therapeutics
HRTX
$88.5M
| $806K | 0.04% |
+58,262
| New | +$844K |
|
448
NOV
NOV
$7.3B
| $806K | 0.04% |
24,474
+3,769
| +18% | +$130K |
|
|
KITE
449
CALL
DELISTED
Kite Pharma, Inc.
KITE
| $802K | 0.03% |
419
-331
| -44% | -$27K |
|
450
PUT
The Mosaic Company
MOS
$7.24B
| $801K | 0.03% |
1,589
-897
| -36% | -$22K |
|
Similar funds
Simplex Trading's Q2 2017 Portfolio in Review
As of Q2 2017, Simplex Trading held 7,527 positions worth $2.3B, down 0.39% from $2.31B the previous quarter. Its ten largest holdings account for 23% of the portfolio.
Simplex Trading withdrew a net $114M in Q2 2017, closing 1,474 positions and reducing 2,320 holdings. Its most notable exit was AT&T, an estimated $19.6M position sold in full.
By sector, the portfolio is most concentrated in Technology at 14% of assets, up from 9.7% a quarter earlier, followed by Communication Services and Consumer Discretionary.
Against the trend, Simplex Trading opened a new position in Amgen worth $32.3M.
- Simplex Trading's largest Q2 2017 buy was Amgen: 187,633 shares worth $32.3M.
- Simplex Trading added most to Amazon in Q2 2017, an estimated $83.1M increase.
- Simplex Trading's biggest Q2 2017 reduction was State Street SPDR S&P 500 ETF Trust, cutting an estimated $29.5M.
- Simplex Trading fully exited AT&T in Q2 2017, selling an estimated $19.6M.
- Simplex Trading's ten largest holdings make up 23% of its $2.3B portfolio in Q2 2017.
- Simplex Trading opened 1,408 new positions and closed 1,474 in Q2 2017.
- Simplex Trading's portfolio value fell 0.39% quarter-over-quarter to $2.3B.
Based on Simplex Trading's 13F filing for Q2 2017, filed 12 Jul 2017.